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Finding the Fourth Proportional to 72,740.40, 109,062 and 58,717.68

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Solution

The fourth proportional to 72,740.40, 109,062 and 58,717.68 is: 88,037.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,740.40 : 109,062 = 58,717.68 : x
  2. Step 2: Convert to fraction form
    72,740.40/109,062 = 58,717.68/x
  3. Step 3: Cross multiply
    72,740.40x = 109,062 × 58,717.68
  4. Step 4: Simplify right side
    72,740.40x = 6,403,867,616.16
  5. Step 5: Solve for x
    x = 6,403,867,616.16/72,740.40
  6. Step 6: Final answer
    x = 88,037.29

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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.