Home / 87,856.28-121,241.15-47,569.20

Finding the Fourth Proportional to 87,856.28, 121,241.15 and 47,569.20

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Solution

The fourth proportional to 87,856.28, 121,241.15 and 47,569.20 is: 65,645.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,856.28 : 121,241.15 = 47,569.20 : x
  2. Step 2: Convert to fraction form
    87,856.28/121,241.15 = 47,569.20/x
  3. Step 3: Cross multiply
    87,856.28x = 121,241.15 × 47,569.20
  4. Step 4: Simplify right side
    87,856.28x = 5,767,344,274.73
  5. Step 5: Solve for x
    x = 5,767,344,274.73/87,856.28
  6. Step 6: Final answer
    x = 65,645.22

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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.