Home / 87,705.40-131,406.90-40,862.20

Finding the Fourth Proportional to 87,705.40, 131,406.90 and 40,862.20

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Solution

The fourth proportional to 87,705.40, 131,406.90 and 40,862.20 is: 61,222.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,705.40 : 131,406.90 = 40,862.20 : x
  2. Step 2: Convert to fraction form
    87,705.40/131,406.90 = 40,862.20/x
  3. Step 3: Cross multiply
    87,705.40x = 131,406.90 × 40,862.20
  4. Step 4: Simplify right side
    87,705.40x = 5,369,575,029.18
  5. Step 5: Solve for x
    x = 5,369,575,029.18/87,705.40
  6. Step 6: Final answer
    x = 61,222.86

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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.