Home / 81,349,080,597.75-122,021,365,224.81-21,658,254,971.78

Finding the Fourth Proportional to 81,349,080,597.75, 122,021,365,224.81 and 21,658,254,971.78

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Solution

The fourth proportional to 81,349,080,597.75, 122,021,365,224.81 and 21,658,254,971.78 is: 32,486,781,911.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,349,080,597.75 : 122,021,365,224.81 = 21,658,254,971.78 : x
  2. Step 2: Convert to fraction form
    81,349,080,597.75/122,021,365,224.81 = 21,658,254,971.78/x
  3. Step 3: Cross multiply
    81,349,080,597.75x = 122,021,365,224.81 × 21,658,254,971.78
  4. Step 4: Simplify right side
    81,349,080,597.75x = 2,642,769,840,043,990,712,320
  5. Step 5: Solve for x
    x = 2,642,769,840,043,990,712,320/81,349,080,597.75
  6. Step 6: Final answer
    x = 32,486,781,911.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.