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Finding the Fourth Proportional to 71,118.53, 98,139.95 and 39,281.27

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Solution

The fourth proportional to 71,118.53, 98,139.95 and 39,281.27 is: 54,206.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,118.53 : 98,139.95 = 39,281.27 : x
  2. Step 2: Convert to fraction form
    71,118.53/98,139.95 = 39,281.27/x
  3. Step 3: Cross multiply
    71,118.53x = 98,139.95 × 39,281.27
  4. Step 4: Simplify right side
    71,118.53x = 3,855,061,677.33
  5. Step 5: Solve for x
    x = 3,855,061,677.33/71,118.53
  6. Step 6: Final answer
    x = 54,206.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.