Home / 72,381.06-99,885.87-40,550.61

Finding the Fourth Proportional to 72,381.06, 99,885.87 and 40,550.61

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Solution

The fourth proportional to 72,381.06, 99,885.87 and 40,550.61 is: 55,959.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,381.06 : 99,885.87 = 40,550.61 : x
  2. Step 2: Convert to fraction form
    72,381.06/99,885.87 = 40,550.61/x
  3. Step 3: Cross multiply
    72,381.06x = 99,885.87 × 40,550.61
  4. Step 4: Simplify right side
    72,381.06x = 4,050,432,958.88
  5. Step 5: Solve for x
    x = 4,050,432,958.88/72,381.06
  6. Step 6: Final answer
    x = 55,959.85

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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.