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Finding the Fourth Proportional to 72,768.90, 109,167.22 and 25,397.52

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Solution

The fourth proportional to 72,768.90, 109,167.22 and 25,397.52 is: 38,101.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,768.90 : 109,167.22 = 25,397.52 : x
  2. Step 2: Convert to fraction form
    72,768.90/109,167.22 = 25,397.52/x
  3. Step 3: Cross multiply
    72,768.90x = 109,167.22 × 25,397.52
  4. Step 4: Simplify right side
    72,768.90x = 2,772,576,653.29
  5. Step 5: Solve for x
    x = 2,772,576,653.29/72,768.90
  6. Step 6: Final answer
    x = 38,101.12

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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.