Home / 71,135.40-98,168.76-39,306.30

Finding the Fourth Proportional to 71,135.40, 98,168.76 and 39,306.30

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Solution

The fourth proportional to 71,135.40, 98,168.76 and 39,306.30 is: 54,243.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,135.40 : 98,168.76 = 39,306.30 : x
  2. Step 2: Convert to fraction form
    71,135.40/98,168.76 = 39,306.30/x
  3. Step 3: Cross multiply
    71,135.40x = 98,168.76 × 39,306.30
  4. Step 4: Simplify right side
    71,135.40x = 3,858,650,731.19
  5. Step 5: Solve for x
    x = 3,858,650,731.19/71,135.40
  6. Step 6: Final answer
    x = 54,243.75

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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.