Home / 85,130,029.78-127,695,046.36-20,433,834.84

Finding the Fourth Proportional to 85,130,029.78, 127,695,046.36 and 20,433,834.84

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Solution

The fourth proportional to 85,130,029.78, 127,695,046.36 and 20,433,834.84 is: 30,650,752.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,130,029.78 : 127,695,046.36 = 20,433,834.84 : x
  2. Step 2: Convert to fraction form
    85,130,029.78/127,695,046.36 = 20,433,834.84/x
  3. Step 3: Cross multiply
    85,130,029.78x = 127,695,046.36 × 20,433,834.84
  4. Step 4: Simplify right side
    85,130,029.78x = 2,609,299,486,567,908
  5. Step 5: Solve for x
    x = 2,609,299,486,567,908/85,130,029.78
  6. Step 6: Final answer
    x = 30,650,752.66

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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.