Home / 87,617.08-120,921.02-53,648.38

Finding the Fourth Proportional to 87,617.08, 120,921.02 and 53,648.38

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Solution

The fourth proportional to 87,617.08, 120,921.02 and 53,648.38 is: 74,040.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,617.08 : 120,921.02 = 53,648.38 : x
  2. Step 2: Convert to fraction form
    87,617.08/120,921.02 = 53,648.38/x
  3. Step 3: Cross multiply
    87,617.08x = 120,921.02 × 53,648.38
  4. Step 4: Simplify right side
    87,617.08x = 6,487,216,830.95
  5. Step 5: Solve for x
    x = 6,487,216,830.95/87,617.08
  6. Step 6: Final answer
    x = 74,040.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.