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Finding the Fourth Proportional to 145,740.52, 218,616.54 and 40,568.68

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Solution

The fourth proportional to 145,740.52, 218,616.54 and 40,568.68 is: 60,854.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,740.52 : 218,616.54 = 40,568.68 : x
  2. Step 2: Convert to fraction form
    145,740.52/218,616.54 = 40,568.68/x
  3. Step 3: Cross multiply
    145,740.52x = 218,616.54 × 40,568.68
  4. Step 4: Simplify right side
    145,740.52x = 8,868,984,453.97
  5. Step 5: Solve for x
    x = 8,868,984,453.97/145,740.52
  6. Step 6: Final answer
    x = 60,854.62

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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.