Home / 87,999.19-121,439.30-47,712.83

Finding the Fourth Proportional to 87,999.19, 121,439.30 and 47,712.83

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Solution

The fourth proportional to 87,999.19, 121,439.30 and 47,712.83 is: 65,843.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,999.19 : 121,439.30 = 47,712.83 : x
  2. Step 2: Convert to fraction form
    87,999.19/121,439.30 = 47,712.83/x
  3. Step 3: Cross multiply
    87,999.19x = 121,439.30 × 47,712.83
  4. Step 4: Simplify right side
    87,999.19x = 5,794,211,830.46
  5. Step 5: Solve for x
    x = 5,794,211,830.46/87,999.19
  6. Step 6: Final answer
    x = 65,843.92

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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.