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Finding the Fourth Proportional to 90,331.64, 124,657.26 and 52,091

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Solution

The fourth proportional to 90,331.64, 124,657.26 and 52,091 is: 71,885.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,331.64 : 124,657.26 = 52,091 : x
  2. Step 2: Convert to fraction form
    90,331.64/124,657.26 = 52,091/x
  3. Step 3: Cross multiply
    90,331.64x = 124,657.26 × 52,091
  4. Step 4: Simplify right side
    90,331.64x = 6,493,521,330.66
  5. Step 5: Solve for x
    x = 6,493,521,330.66/90,331.64
  6. Step 6: Final answer
    x = 71,885.35

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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.