Home / 87,421.50-131,155.29-31,267.17

Finding the Fourth Proportional to 87,421.50, 131,155.29 and 31,267.17

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Solution

The fourth proportional to 87,421.50, 131,155.29 and 31,267.17 is: 46,909.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,421.50 : 131,155.29 = 31,267.17 : x
  2. Step 2: Convert to fraction form
    87,421.50/131,155.29 = 31,267.17/x
  3. Step 3: Cross multiply
    87,421.50x = 131,155.29 × 31,267.17
  4. Step 4: Simplify right side
    87,421.50x = 4,100,854,748.83
  5. Step 5: Solve for x
    x = 4,100,854,748.83/87,421.50
  6. Step 6: Final answer
    x = 46,909.00

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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.