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Finding the Fourth Proportional to 74,959.60, 103,434.26 and 48,138.43

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Solution

The fourth proportional to 74,959.60, 103,434.26 and 48,138.43 is: 66,424.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,959.60 : 103,434.26 = 48,138.43 : x
  2. Step 2: Convert to fraction form
    74,959.60/103,434.26 = 48,138.43/x
  3. Step 3: Cross multiply
    74,959.60x = 103,434.26 × 48,138.43
  4. Step 4: Simplify right side
    74,959.60x = 4,979,162,385.33
  5. Step 5: Solve for x
    x = 4,979,162,385.33/74,959.60
  6. Step 6: Final answer
    x = 66,424.61

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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.