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Finding the Fourth Proportional to 85,155.90, 127,747.35 and 29,001.30

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Solution

The fourth proportional to 85,155.90, 127,747.35 and 29,001.30 is: 43,506.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,155.90 : 127,747.35 = 29,001.30 : x
  2. Step 2: Convert to fraction form
    85,155.90/127,747.35 = 29,001.30/x
  3. Step 3: Cross multiply
    85,155.90x = 127,747.35 × 29,001.30
  4. Step 4: Simplify right side
    85,155.90x = 3,704,839,221.56
  5. Step 5: Solve for x
    x = 3,704,839,221.56/85,155.90
  6. Step 6: Final answer
    x = 43,506.55

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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.