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Finding the Fourth Proportional to 79,447.32, 109,644.92 and 45,449.06

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Solution

The fourth proportional to 79,447.32, 109,644.92 and 45,449.06 is: 62,724.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,447.32 : 109,644.92 = 45,449.06 : x
  2. Step 2: Convert to fraction form
    79,447.32/109,644.92 = 45,449.06/x
  3. Step 3: Cross multiply
    79,447.32x = 109,644.92 × 45,449.06
  4. Step 4: Simplify right side
    79,447.32x = 4,983,257,772.31
  5. Step 5: Solve for x
    x = 4,983,257,772.31/79,447.32
  6. Step 6: Final answer
    x = 62,724.05

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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.