Home / 74,029.38-102,135.69-42,175.86

Finding the Fourth Proportional to 74,029.38, 102,135.69 and 42,175.86

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Solution

The fourth proportional to 74,029.38, 102,135.69 and 42,175.86 is: 58,188.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,029.38 : 102,135.69 = 42,175.86 : x
  2. Step 2: Convert to fraction form
    74,029.38/102,135.69 = 42,175.86/x
  3. Step 3: Cross multiply
    74,029.38x = 102,135.69 × 42,175.86
  4. Step 4: Simplify right side
    74,029.38x = 4,307,660,562.44
  5. Step 5: Solve for x
    x = 4,307,660,562.44/74,029.38
  6. Step 6: Final answer
    x = 58,188.53

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1.5x scale

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.