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Finding the Fourth Proportional to 77,663.44, 116,473.92 and 21,490.12

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Solution

The fourth proportional to 77,663.44, 116,473.92 and 21,490.12 is: 32,229.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,663.44 : 116,473.92 = 21,490.12 : x
  2. Step 2: Convert to fraction form
    77,663.44/116,473.92 = 21,490.12/x
  3. Step 3: Cross multiply
    77,663.44x = 116,473.92 × 21,490.12
  4. Step 4: Simplify right side
    77,663.44x = 2,503,038,517.67
  5. Step 5: Solve for x
    x = 2,503,038,517.67/77,663.44
  6. Step 6: Final answer
    x = 32,229.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.