Home / 87,856.78-121,241.84-47,569.71

Finding the Fourth Proportional to 87,856.78, 121,241.84 and 47,569.71

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Solution

The fourth proportional to 87,856.78, 121,241.84 and 47,569.71 is: 65,645.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,856.78 : 121,241.84 = 47,569.71 : x
  2. Step 2: Convert to fraction form
    87,856.78/121,241.84 = 47,569.71/x
  3. Step 3: Cross multiply
    87,856.78x = 121,241.84 × 47,569.71
  4. Step 4: Simplify right side
    87,856.78x = 5,767,439,168.67
  5. Step 5: Solve for x
    x = 5,767,439,168.67/87,856.78
  6. Step 6: Final answer
    x = 65,645.92

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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.