Home / 87,807.92-121,176.78-51,984.86

Finding the Fourth Proportional to 87,807.92, 121,176.78 and 51,984.86

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Solution

The fourth proportional to 87,807.92, 121,176.78 and 51,984.86 is: 71,740.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,807.92 : 121,176.78 = 51,984.86 : x
  2. Step 2: Convert to fraction form
    87,807.92/121,176.78 = 51,984.86/x
  3. Step 3: Cross multiply
    87,807.92x = 121,176.78 × 51,984.86
  4. Step 4: Simplify right side
    87,807.92x = 6,299,357,943.55
  5. Step 5: Solve for x
    x = 6,299,357,943.55/87,807.92
  6. Step 6: Final answer
    x = 71,740.20

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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.