Home / 87,040.80-130,561.20-51,962.40

Finding the Fourth Proportional to 87,040.80, 130,561.20 and 51,962.40

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Solution

The fourth proportional to 87,040.80, 130,561.20 and 51,962.40 is: 77,943.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,040.80 : 130,561.20 = 51,962.40 : x
  2. Step 2: Convert to fraction form
    87,040.80/130,561.20 = 51,962.40/x
  3. Step 3: Cross multiply
    87,040.80x = 130,561.20 × 51,962.40
  4. Step 4: Simplify right side
    87,040.80x = 6,784,273,298.88
  5. Step 5: Solve for x
    x = 6,784,273,298.88/87,040.80
  6. Step 6: Final answer
    x = 77,943.60

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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.