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Finding the Fourth Proportional to 90,399, 124,750.62 and 52,680.54

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Solution

The fourth proportional to 90,399, 124,750.62 and 52,680.54 is: 72,699.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,399 : 124,750.62 = 52,680.54 : x
  2. Step 2: Convert to fraction form
    90,399/124,750.62 = 52,680.54/x
  3. Step 3: Cross multiply
    90,399x = 124,750.62 × 52,680.54
  4. Step 4: Simplify right side
    90,399x = 6,571,930,026.93
  5. Step 5: Solve for x
    x = 6,571,930,026.93/90,399
  6. Step 6: Final answer
    x = 72,699.15

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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.