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Finding the Fourth Proportional to 74,969.48, 112,398.67 and 45,380.32

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Solution

The fourth proportional to 74,969.48, 112,398.67 and 45,380.32 is: 68,036.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,969.48 : 112,398.67 = 45,380.32 : x
  2. Step 2: Convert to fraction form
    74,969.48/112,398.67 = 45,380.32/x
  3. Step 3: Cross multiply
    74,969.48x = 112,398.67 × 45,380.32
  4. Step 4: Simplify right side
    74,969.48x = 5,100,687,387.90
  5. Step 5: Solve for x
    x = 5,100,687,387.90/74,969.48
  6. Step 6: Final answer
    x = 68,036.85

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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.