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Finding the Fourth Proportional to 79,276.60, 109,398.42 and 47,426.68

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Solution

The fourth proportional to 79,276.60, 109,398.42 and 47,426.68 is: 65,446.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,276.60 : 109,398.42 = 47,426.68 : x
  2. Step 2: Convert to fraction form
    79,276.60/109,398.42 = 47,426.68/x
  3. Step 3: Cross multiply
    79,276.60x = 109,398.42 × 47,426.68
  4. Step 4: Simplify right side
    79,276.60x = 5,188,403,857.85
  5. Step 5: Solve for x
    x = 5,188,403,857.85/79,276.60
  6. Step 6: Final answer
    x = 65,446.85

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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.