Home / 87,999.30-121,439.70-47,713.68

Finding the Fourth Proportional to 87,999.30, 121,439.70 and 47,713.68

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Solution

The fourth proportional to 87,999.30, 121,439.70 and 47,713.68 is: 65,845.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,999.30 : 121,439.70 = 47,713.68 : x
  2. Step 2: Convert to fraction form
    87,999.30/121,439.70 = 47,713.68/x
  3. Step 3: Cross multiply
    87,999.30x = 121,439.70 × 47,713.68
  4. Step 4: Simplify right side
    87,999.30x = 5,794,334,985.10
  5. Step 5: Solve for x
    x = 5,794,334,985.10/87,999.30
  6. Step 6: Final answer
    x = 65,845.24

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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.