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Finding the Fourth Proportional to 60,966.60, 91,449.90 and 19,417.80

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Solution

The fourth proportional to 60,966.60, 91,449.90 and 19,417.80 is: 29,126.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,966.60 : 91,449.90 = 19,417.80 : x
  2. Step 2: Convert to fraction form
    60,966.60/91,449.90 = 19,417.80/x
  3. Step 3: Cross multiply
    60,966.60x = 91,449.90 × 19,417.80
  4. Step 4: Simplify right side
    60,966.60x = 1,775,755,868.22
  5. Step 5: Solve for x
    x = 1,775,755,868.22/60,966.60
  6. Step 6: Final answer
    x = 29,126.70

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Similar ratio
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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.