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Finding the Fourth Proportional to 77,113.72, 115,591.80 and 43,763.32

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Solution

The fourth proportional to 77,113.72, 115,591.80 and 43,763.32 is: 65,600.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,113.72 : 115,591.80 = 43,763.32 : x
  2. Step 2: Convert to fraction form
    77,113.72/115,591.80 = 43,763.32/x
  3. Step 3: Cross multiply
    77,113.72x = 115,591.80 × 43,763.32
  4. Step 4: Simplify right side
    77,113.72x = 5,058,680,932.78
  5. Step 5: Solve for x
    x = 5,058,680,932.78/77,113.72
  6. Step 6: Final answer
    x = 65,600.27

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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.