Home / 87,218.10-130,827.15-53,975.70

Finding the Fourth Proportional to 87,218.10, 130,827.15 and 53,975.70

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Solution

The fourth proportional to 87,218.10, 130,827.15 and 53,975.70 is: 80,963.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,218.10 : 130,827.15 = 53,975.70 : x
  2. Step 2: Convert to fraction form
    87,218.10/130,827.15 = 53,975.70/x
  3. Step 3: Cross multiply
    87,218.10x = 130,827.15 × 53,975.70
  4. Step 4: Simplify right side
    87,218.10x = 7,061,487,000.26
  5. Step 5: Solve for x
    x = 7,061,487,000.26/87,218.10
  6. Step 6: Final answer
    x = 80,963.55

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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.