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Finding the Fourth Proportional to 78,125.60, 107,819.96 and 44,140.32

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Solution

The fourth proportional to 78,125.60, 107,819.96 and 44,140.32 is: 60,917.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,125.60 : 107,819.96 = 44,140.32 : x
  2. Step 2: Convert to fraction form
    78,125.60/107,819.96 = 44,140.32/x
  3. Step 3: Cross multiply
    78,125.60x = 107,819.96 × 44,140.32
  4. Step 4: Simplify right side
    78,125.60x = 4,759,207,536.79
  5. Step 5: Solve for x
    x = 4,759,207,536.79/78,125.60
  6. Step 6: Final answer
    x = 60,917.39

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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.