Home / 87,641.20-131,461.80-56,148.40

Finding the Fourth Proportional to 87,641.20, 131,461.80 and 56,148.40

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Solution

The fourth proportional to 87,641.20, 131,461.80 and 56,148.40 is: 84,222.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,641.20 : 131,461.80 = 56,148.40 : x
  2. Step 2: Convert to fraction form
    87,641.20/131,461.80 = 56,148.40/x
  3. Step 3: Cross multiply
    87,641.20x = 131,461.80 × 56,148.40
  4. Step 4: Simplify right side
    87,641.20x = 7,381,369,731.12
  5. Step 5: Solve for x
    x = 7,381,369,731.12/87,641.20
  6. Step 6: Final answer
    x = 84,222.60

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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.