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Finding the Fourth Proportional to 74,856.60, 112,228.74 and 45,268.38

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Solution

The fourth proportional to 74,856.60, 112,228.74 and 45,268.38 is: 67,868.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,856.60 : 112,228.74 = 45,268.38 : x
  2. Step 2: Convert to fraction form
    74,856.60/112,228.74 = 45,268.38/x
  3. Step 3: Cross multiply
    74,856.60x = 112,228.74 × 45,268.38
  4. Step 4: Simplify right side
    74,856.60x = 5,080,413,249.24
  5. Step 5: Solve for x
    x = 5,080,413,249.24/74,856.60
  6. Step 6: Final answer
    x = 67,868.61

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1.5x scale

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.