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Finding the Fourth Proportional to 78,365.68, 108,144.72 and 44,373.76

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Solution

The fourth proportional to 78,365.68, 108,144.72 and 44,373.76 is: 61,235.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,365.68 : 108,144.72 = 44,373.76 : x
  2. Step 2: Convert to fraction form
    78,365.68/108,144.72 = 44,373.76/x
  3. Step 3: Cross multiply
    78,365.68x = 108,144.72 × 44,373.76
  4. Step 4: Simplify right side
    78,365.68x = 4,798,787,850.55
  5. Step 5: Solve for x
    x = 4,798,787,850.55/78,365.68
  6. Step 6: Final answer
    x = 61,235.84

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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.