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Finding the Fourth Proportional to 79,446.57, 109,643.88 and 45,448.31

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Solution

The fourth proportional to 79,446.57, 109,643.88 and 45,448.31 is: 62,723.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,446.57 : 109,643.88 = 45,448.31 : x
  2. Step 2: Convert to fraction form
    79,446.57/109,643.88 = 45,448.31/x
  3. Step 3: Cross multiply
    79,446.57x = 109,643.88 × 45,448.31
  4. Step 4: Simplify right side
    79,446.57x = 4,983,128,499.62
  5. Step 5: Solve for x
    x = 4,983,128,499.62/79,446.57
  6. Step 6: Final answer
    x = 62,723.02

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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.