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Finding the Fourth Proportional to 85,787, 118,390.92 and 48,073.40

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Solution

The fourth proportional to 85,787, 118,390.92 and 48,073.40 is: 66,344.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,787 : 118,390.92 = 48,073.40 : x
  2. Step 2: Convert to fraction form
    85,787/118,390.92 = 48,073.40/x
  3. Step 3: Cross multiply
    85,787x = 118,390.92 × 48,073.40
  4. Step 4: Simplify right side
    85,787x = 5,691,454,053.53
  5. Step 5: Solve for x
    x = 5,691,454,053.53/85,787
  6. Step 6: Final answer
    x = 66,344.02

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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.