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Finding the Fourth Proportional to 74,882.64, 112,246.20 and 30,490.32

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Solution

The fourth proportional to 74,882.64, 112,246.20 and 30,490.32 is: 45,703.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,882.64 : 112,246.20 = 30,490.32 : x
  2. Step 2: Convert to fraction form
    74,882.64/112,246.20 = 30,490.32/x
  3. Step 3: Cross multiply
    74,882.64x = 112,246.20 × 30,490.32
  4. Step 4: Simplify right side
    74,882.64x = 3,422,422,556.78
  5. Step 5: Solve for x
    x = 3,422,422,556.78/74,882.64
  6. Step 6: Final answer
    x = 45,703.82

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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.