Home / 87,690.08-131,502.64-31,515.06

Finding the Fourth Proportional to 87,690.08, 131,502.64 and 31,515.06

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Solution

The fourth proportional to 87,690.08, 131,502.64 and 31,515.06 is: 47,260.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,690.08 : 131,502.64 = 31,515.06 : x
  2. Step 2: Convert to fraction form
    87,690.08/131,502.64 = 31,515.06/x
  3. Step 3: Cross multiply
    87,690.08x = 131,502.64 × 31,515.06
  4. Step 4: Simplify right side
    87,690.08x = 4,144,313,589.76
  5. Step 5: Solve for x
    x = 4,144,313,589.76/87,690.08
  6. Step 6: Final answer
    x = 47,260.92

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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.