Home / 85,536,009.60-128,279,131.20-47,215,881.60

Finding the Fourth Proportional to 85,536,009.60, 128,279,131.20 and 47,215,881.60

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Solution

The fourth proportional to 85,536,009.60, 128,279,131.20 and 47,215,881.60 is: 70,810,086.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,009.60 : 128,279,131.20 = 47,215,881.60 : x
  2. Step 2: Convert to fraction form
    85,536,009.60/128,279,131.20 = 47,215,881.60/x
  3. Step 3: Cross multiply
    85,536,009.60x = 128,279,131.20 × 47,215,881.60
  4. Step 4: Simplify right side
    85,536,009.60x = 6,056,812,270,490,066
  5. Step 5: Solve for x
    x = 6,056,812,270,490,066/85,536,009.60
  6. Step 6: Final answer
    x = 70,810,086.87

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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.