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Finding the Fourth Proportional to 78,119.60, 107,811.68 and 44,134.32

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Solution

The fourth proportional to 78,119.60, 107,811.68 and 44,134.32 is: 60,909.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,119.60 : 107,811.68 = 44,134.32 : x
  2. Step 2: Convert to fraction form
    78,119.60/107,811.68 = 44,134.32/x
  3. Step 3: Cross multiply
    78,119.60x = 107,811.68 × 44,134.32
  4. Step 4: Simplify right side
    78,119.60x = 4,758,195,184.86
  5. Step 5: Solve for x
    x = 4,758,195,184.86/78,119.60
  6. Step 6: Final answer
    x = 60,909.11

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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.