Home / 72,343.89-99,834.68-40,512.80

Finding the Fourth Proportional to 72,343.89, 99,834.68 and 40,512.80

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Solution

The fourth proportional to 72,343.89, 99,834.68 and 40,512.80 is: 55,907.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,343.89 : 99,834.68 = 40,512.80 : x
  2. Step 2: Convert to fraction form
    72,343.89/99,834.68 = 40,512.80/x
  3. Step 3: Cross multiply
    72,343.89x = 99,834.68 × 40,512.80
  4. Step 4: Simplify right side
    72,343.89x = 4,044,581,722.17
  5. Step 5: Solve for x
    x = 4,044,581,722.17/72,343.89
  6. Step 6: Final answer
    x = 55,907.72

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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.