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Finding the Fourth Proportional to 87,872.92, 121,266.30 and 48,128.92

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Solution

The fourth proportional to 87,872.92, 121,266.30 and 48,128.92 is: 66,418.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,872.92 : 121,266.30 = 48,128.92 : x
  2. Step 2: Convert to fraction form
    87,872.92/121,266.30 = 48,128.92/x
  3. Step 3: Cross multiply
    87,872.92x = 121,266.30 × 48,128.92
  4. Step 4: Simplify right side
    87,872.92x = 5,836,416,051.40
  5. Step 5: Solve for x
    x = 5,836,416,051.40/87,872.92
  6. Step 6: Final answer
    x = 66,418.82

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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.