Home / 87,807.50-121,174.64-47,521.24

Finding the Fourth Proportional to 87,807.50, 121,174.64 and 47,521.24

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Solution

The fourth proportional to 87,807.50, 121,174.64 and 47,521.24 is: 65,579.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,807.50 : 121,174.64 = 47,521.24 : x
  2. Step 2: Convert to fraction form
    87,807.50/121,174.64 = 47,521.24/x
  3. Step 3: Cross multiply
    87,807.50x = 121,174.64 × 47,521.24
  4. Step 4: Simplify right side
    87,807.50x = 5,758,369,149.35
  5. Step 5: Solve for x
    x = 5,758,369,149.35/87,807.50
  6. Step 6: Final answer
    x = 65,579.47

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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.