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Finding the Fourth Proportional to 89,151.40, 133,727.10 and 57,658.60

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Solution

The fourth proportional to 89,151.40, 133,727.10 and 57,658.60 is: 86,487.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,151.40 : 133,727.10 = 57,658.60 : x
  2. Step 2: Convert to fraction form
    89,151.40/133,727.10 = 57,658.60/x
  3. Step 3: Cross multiply
    89,151.40x = 133,727.10 × 57,658.60
  4. Step 4: Simplify right side
    89,151.40x = 7,710,517,368.06
  5. Step 5: Solve for x
    x = 7,710,517,368.06/89,151.40
  6. Step 6: Final answer
    x = 86,487.90

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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.