Home / 74,503.24-111,631.92-42,939.80

Finding the Fourth Proportional to 74,503.24, 111,631.92 and 42,939.80

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Solution

The fourth proportional to 74,503.24, 111,631.92 and 42,939.80 is: 64,338.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,503.24 : 111,631.92 = 42,939.80 : x
  2. Step 2: Convert to fraction form
    74,503.24/111,631.92 = 42,939.80/x
  3. Step 3: Cross multiply
    74,503.24x = 111,631.92 × 42,939.80
  4. Step 4: Simplify right side
    74,503.24x = 4,793,452,318.42
  5. Step 5: Solve for x
    x = 4,793,452,318.42/74,503.24
  6. Step 6: Final answer
    x = 64,338.84

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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.