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Finding the Fourth Proportional to 89,812.80, 134,553.15 and 52,390.80

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Solution

The fourth proportional to 89,812.80, 134,553.15 and 52,390.80 is: 78,489.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,812.80 : 134,553.15 = 52,390.80 : x
  2. Step 2: Convert to fraction form
    89,812.80/134,553.15 = 52,390.80/x
  3. Step 3: Cross multiply
    89,812.80x = 134,553.15 × 52,390.80
  4. Step 4: Simplify right side
    89,812.80x = 7,049,347,171.02
  5. Step 5: Solve for x
    x = 7,049,347,171.02/89,812.80
  6. Step 6: Final answer
    x = 78,489.34

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1.5x scale

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.