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Finding the Fourth Proportional to 145,046.68, 217,565.46 and 39,864.74

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Solution

The fourth proportional to 145,046.68, 217,565.46 and 39,864.74 is: 59,795.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,046.68 : 217,565.46 = 39,864.74 : x
  2. Step 2: Convert to fraction form
    145,046.68/217,565.46 = 39,864.74/x
  3. Step 3: Cross multiply
    145,046.68x = 217,565.46 × 39,864.74
  4. Step 4: Simplify right side
    145,046.68x = 8,673,190,495.88
  5. Step 5: Solve for x
    x = 8,673,190,495.88/145,046.68
  6. Step 6: Final answer
    x = 59,795.86

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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.