Home / 78,425.08-108,152.82-60,491.68

Finding the Fourth Proportional to 78,425.08, 108,152.82 and 60,491.68

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Solution

The fourth proportional to 78,425.08, 108,152.82 and 60,491.68 is: 83,421.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,425.08 : 108,152.82 = 60,491.68 : x
  2. Step 2: Convert to fraction form
    78,425.08/108,152.82 = 60,491.68/x
  3. Step 3: Cross multiply
    78,425.08x = 108,152.82 × 60,491.68
  4. Step 4: Simplify right side
    78,425.08x = 6,542,345,778.54
  5. Step 5: Solve for x
    x = 6,542,345,778.54/78,425.08
  6. Step 6: Final answer
    x = 83,421.60

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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.