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Finding the Fourth Proportional to 171,012, 256,521.65 and 58,691.73

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Solution

The fourth proportional to 171,012, 256,521.65 and 58,691.73 is: 88,038.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,012 : 256,521.65 = 58,691.73 : x
  2. Step 2: Convert to fraction form
    171,012/256,521.65 = 58,691.73/x
  3. Step 3: Cross multiply
    171,012x = 256,521.65 × 58,691.73
  4. Step 4: Simplify right side
    171,012x = 15,055,699,127.50
  5. Step 5: Solve for x
    x = 15,055,699,127.50/171,012
  6. Step 6: Final answer
    x = 88,038.85

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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.