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Finding the Fourth Proportional to 90,251, 124,555.59 and 52,011.91

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Solution

The fourth proportional to 90,251, 124,555.59 and 52,011.91 is: 71,781.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,251 : 124,555.59 = 52,011.91 : x
  2. Step 2: Convert to fraction form
    90,251/124,555.59 = 52,011.91/x
  3. Step 3: Cross multiply
    90,251x = 124,555.59 × 52,011.91
  4. Step 4: Simplify right side
    90,251x = 6,478,374,137.08
  5. Step 5: Solve for x
    x = 6,478,374,137.08/90,251
  6. Step 6: Final answer
    x = 71,781.74

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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.