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Finding the Fourth Proportional to 87,188.94, 130,753.98 and 28,010.70

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Solution

The fourth proportional to 87,188.94, 130,753.98 and 28,010.70 is: 42,006.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,188.94 : 130,753.98 = 28,010.70 : x
  2. Step 2: Convert to fraction form
    87,188.94/130,753.98 = 28,010.70/x
  3. Step 3: Cross multiply
    87,188.94x = 130,753.98 × 28,010.70
  4. Step 4: Simplify right side
    87,188.94x = 3,662,510,507.59
  5. Step 5: Solve for x
    x = 3,662,510,507.59/87,188.94
  6. Step 6: Final answer
    x = 42,006.60

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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.