Home / 78,701.26-108,607.55-42,891.21

Finding the Fourth Proportional to 78,701.26, 108,607.55 and 42,891.21

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Solution

The fourth proportional to 78,701.26, 108,607.55 and 42,891.21 is: 59,189.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,701.26 : 108,607.55 = 42,891.21 : x
  2. Step 2: Convert to fraction form
    78,701.26/108,607.55 = 42,891.21/x
  3. Step 3: Cross multiply
    78,701.26x = 108,607.55 × 42,891.21
  4. Step 4: Simplify right side
    78,701.26x = 4,658,309,234.64
  5. Step 5: Solve for x
    x = 4,658,309,234.64/78,701.26
  6. Step 6: Final answer
    x = 59,189.77

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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.