Home / 79,743.60-119,615.55-74,872.05

Finding the Fourth Proportional to 79,743.60, 119,615.55 and 74,872.05

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Solution

The fourth proportional to 79,743.60, 119,615.55 and 74,872.05 is: 112,308.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,743.60 : 119,615.55 = 74,872.05 : x
  2. Step 2: Convert to fraction form
    79,743.60/119,615.55 = 74,872.05/x
  3. Step 3: Cross multiply
    79,743.60x = 119,615.55 × 74,872.05
  4. Step 4: Simplify right side
    79,743.60x = 8,955,861,440.38
  5. Step 5: Solve for x
    x = 8,955,861,440.38/79,743.60
  6. Step 6: Final answer
    x = 112,308.22

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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.