Home / 145,609.38-218,414.16-40,428.36

Finding the Fourth Proportional to 145,609.38, 218,414.16 and 40,428.36

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Solution

The fourth proportional to 145,609.38, 218,414.16 and 40,428.36 is: 60,642.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,609.38 : 218,414.16 = 40,428.36 : x
  2. Step 2: Convert to fraction form
    145,609.38/218,414.16 = 40,428.36/x
  3. Step 3: Cross multiply
    145,609.38x = 218,414.16 × 40,428.36
  4. Step 4: Simplify right side
    145,609.38x = 8,830,126,289.58
  5. Step 5: Solve for x
    x = 8,830,126,289.58/145,609.38
  6. Step 6: Final answer
    x = 60,642.56

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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.