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Finding the Fourth Proportional to 87,309.96, 130,855.42 and 37,331.39

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Solution

The fourth proportional to 87,309.96, 130,855.42 and 37,331.39 is: 55,950.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,309.96 : 130,855.42 = 37,331.39 : x
  2. Step 2: Convert to fraction form
    87,309.96/130,855.42 = 37,331.39/x
  3. Step 3: Cross multiply
    87,309.96x = 130,855.42 × 37,331.39
  4. Step 4: Simplify right side
    87,309.96x = 4,885,013,970.03
  5. Step 5: Solve for x
    x = 4,885,013,970.03/87,309.96
  6. Step 6: Final answer
    x = 55,950.25

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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.