Home / 87,856.20-121,240.13-47,569.64

Finding the Fourth Proportional to 87,856.20, 121,240.13 and 47,569.64

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Solution

The fourth proportional to 87,856.20, 121,240.13 and 47,569.64 is: 65,645.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,856.20 : 121,240.13 = 47,569.64 : x
  2. Step 2: Convert to fraction form
    87,856.20/121,240.13 = 47,569.64/x
  3. Step 3: Cross multiply
    87,856.20x = 121,240.13 × 47,569.64
  4. Step 4: Simplify right side
    87,856.20x = 5,767,348,493.60
  5. Step 5: Solve for x
    x = 5,767,348,493.60/87,856.20
  6. Step 6: Final answer
    x = 65,645.32

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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.