Home / 80,729.86-121,094.89-38,600.04

Finding the Fourth Proportional to 80,729.86, 121,094.89 and 38,600.04

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Solution

The fourth proportional to 80,729.86, 121,094.89 and 38,600.04 is: 57,900.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,729.86 : 121,094.89 = 38,600.04 : x
  2. Step 2: Convert to fraction form
    80,729.86/121,094.89 = 38,600.04/x
  3. Step 3: Cross multiply
    80,729.86x = 121,094.89 × 38,600.04
  4. Step 4: Simplify right side
    80,729.86x = 4,674,267,597.80
  5. Step 5: Solve for x
    x = 4,674,267,597.80/80,729.86
  6. Step 6: Final answer
    x = 57,900.11

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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.