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Finding the Fourth Proportional to 88,725, 122,461.29 and 58,515.78

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Solution

The fourth proportional to 88,725, 122,461.29 and 58,515.78 is: 80,765.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,725 : 122,461.29 = 58,515.78 : x
  2. Step 2: Convert to fraction form
    88,725/122,461.29 = 58,515.78/x
  3. Step 3: Cross multiply
    88,725x = 122,461.29 × 58,515.78
  4. Step 4: Simplify right side
    88,725x = 7,165,917,904.16
  5. Step 5: Solve for x
    x = 7,165,917,904.16/88,725
  6. Step 6: Final answer
    x = 80,765.49

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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.