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Finding the Fourth Proportional to 78,117.60, 107,808.92 and 44,132.32

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Solution

The fourth proportional to 78,117.60, 107,808.92 and 44,132.32 is: 60,906.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,117.60 : 107,808.92 = 44,132.32 : x
  2. Step 2: Convert to fraction form
    78,117.60/107,808.92 = 44,132.32/x
  3. Step 3: Cross multiply
    78,117.60x = 107,808.92 × 44,132.32
  4. Step 4: Simplify right side
    78,117.60x = 4,757,857,960.01
  5. Step 5: Solve for x
    x = 4,757,857,960.01/78,117.60
  6. Step 6: Final answer
    x = 60,906.35

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1.5x scale

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.