Home / 87,487.88-131,199.54-31,312.76

Finding the Fourth Proportional to 87,487.88, 131,199.54 and 31,312.76

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Solution

The fourth proportional to 87,487.88, 131,199.54 and 31,312.76 is: 46,957.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,487.88 : 131,199.54 = 31,312.76 : x
  2. Step 2: Convert to fraction form
    87,487.88/131,199.54 = 31,312.76/x
  3. Step 3: Cross multiply
    87,487.88x = 131,199.54 × 31,312.76
  4. Step 4: Simplify right side
    87,487.88x = 4,108,219,708.13
  5. Step 5: Solve for x
    x = 4,108,219,708.13/87,487.88
  6. Step 6: Final answer
    x = 46,957.59

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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.