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Finding the Fourth Proportional to 78,437.67, 108,243.66 and 44,452.64

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Solution

The fourth proportional to 78,437.67, 108,243.66 and 44,452.64 is: 61,344.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,437.67 : 108,243.66 = 44,452.64 : x
  2. Step 2: Convert to fraction form
    78,437.67/108,243.66 = 44,452.64/x
  3. Step 3: Cross multiply
    78,437.67x = 108,243.66 × 44,452.64
  4. Step 4: Simplify right side
    78,437.67x = 4,811,715,909.04
  5. Step 5: Solve for x
    x = 4,811,715,909.04/78,437.67
  6. Step 6: Final answer
    x = 61,344.45

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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.