Home / 87,807.38-121,174.47-47,521.13

Finding the Fourth Proportional to 87,807.38, 121,174.47 and 47,521.13

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Solution

The fourth proportional to 87,807.38, 121,174.47 and 47,521.13 is: 65,579.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,807.38 : 121,174.47 = 47,521.13 : x
  2. Step 2: Convert to fraction form
    87,807.38/121,174.47 = 47,521.13/x
  3. Step 3: Cross multiply
    87,807.38x = 121,174.47 × 47,521.13
  4. Step 4: Simplify right side
    87,807.38x = 5,758,347,135.68
  5. Step 5: Solve for x
    x = 5,758,347,135.68/87,807.38
  6. Step 6: Final answer
    x = 65,579.31

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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.