Home / 40,738.48-61,104.80-12,657.86

Finding the Fourth Proportional to 40,738.48, 61,104.80 and 12,657.86

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Solution

The fourth proportional to 40,738.48, 61,104.80 and 12,657.86 is: 18,985.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,738.48 : 61,104.80 = 12,657.86 : x
  2. Step 2: Convert to fraction form
    40,738.48/61,104.80 = 12,657.86/x
  3. Step 3: Cross multiply
    40,738.48x = 61,104.80 × 12,657.86
  4. Step 4: Simplify right side
    40,738.48x = 773,456,003.73
  5. Step 5: Solve for x
    x = 773,456,003.73/40,738.48
  6. Step 6: Final answer
    x = 18,985.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.