Home / 75,140.92-103,693.10-41,148.78

Finding the Fourth Proportional to 75,140.92, 103,693.10 and 41,148.78

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Solution

The fourth proportional to 75,140.92, 103,693.10 and 41,148.78 is: 56,784.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,140.92 : 103,693.10 = 41,148.78 : x
  2. Step 2: Convert to fraction form
    75,140.92/103,693.10 = 41,148.78/x
  3. Step 3: Cross multiply
    75,140.92x = 103,693.10 × 41,148.78
  4. Step 4: Simplify right side
    75,140.92x = 4,266,844,559.42
  5. Step 5: Solve for x
    x = 4,266,844,559.42/75,140.92
  6. Step 6: Final answer
    x = 56,784.57

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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.