Home / 78,727.88-108,646.50-45,200.36

Finding the Fourth Proportional to 78,727.88, 108,646.50 and 45,200.36

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Solution

The fourth proportional to 78,727.88, 108,646.50 and 45,200.36 is: 62,377.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,727.88 : 108,646.50 = 45,200.36 : x
  2. Step 2: Convert to fraction form
    78,727.88/108,646.50 = 45,200.36/x
  3. Step 3: Cross multiply
    78,727.88x = 108,646.50 × 45,200.36
  4. Step 4: Simplify right side
    78,727.88x = 4,910,860,912.74
  5. Step 5: Solve for x
    x = 4,910,860,912.74/78,727.88
  6. Step 6: Final answer
    x = 62,377.66

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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.