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Finding the Fourth Proportional to 145,053.64, 217,591 and 60,729

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Solution

The fourth proportional to 145,053.64, 217,591 and 60,729 is: 91,097.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,053.64 : 217,591 = 60,729 : x
  2. Step 2: Convert to fraction form
    145,053.64/217,591 = 60,729/x
  3. Step 3: Cross multiply
    145,053.64x = 217,591 × 60,729
  4. Step 4: Simplify right side
    145,053.64x = 13,214,083,839
  5. Step 5: Solve for x
    x = 13,214,083,839/145,053.64
  6. Step 6: Final answer
    x = 91,097.91

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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.