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Finding the Fourth Proportional to 78,488.29, 108,311.57 and 44,499.93

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Solution

The fourth proportional to 78,488.29, 108,311.57 and 44,499.93 is: 61,408.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,488.29 : 108,311.57 = 44,499.93 : x
  2. Step 2: Convert to fraction form
    78,488.29/108,311.57 = 44,499.93/x
  3. Step 3: Cross multiply
    78,488.29x = 108,311.57 × 44,499.93
  4. Step 4: Simplify right side
    78,488.29x = 4,819,857,283.19
  5. Step 5: Solve for x
    x = 4,819,857,283.19/78,488.29
  6. Step 6: Final answer
    x = 61,408.62

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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.