Home / 87,707.40-131,409.90-40,864.20

Finding the Fourth Proportional to 87,707.40, 131,409.90 and 40,864.20

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Solution

The fourth proportional to 87,707.40, 131,409.90 and 40,864.20 is: 61,225.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,707.40 : 131,409.90 = 40,864.20 : x
  2. Step 2: Convert to fraction form
    87,707.40/131,409.90 = 40,864.20/x
  3. Step 3: Cross multiply
    87,707.40x = 131,409.90 × 40,864.20
  4. Step 4: Simplify right side
    87,707.40x = 5,369,960,435.58
  5. Step 5: Solve for x
    x = 5,369,960,435.58/87,707.40
  6. Step 6: Final answer
    x = 61,225.85

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1.5x scale

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.