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Finding the Fourth Proportional to 78,898.23, 108,874.74 and 43,080.96

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Solution

The fourth proportional to 78,898.23, 108,874.74 and 43,080.96 is: 59,449.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,898.23 : 108,874.74 = 43,080.96 : x
  2. Step 2: Convert to fraction form
    78,898.23/108,874.74 = 43,080.96/x
  3. Step 3: Cross multiply
    78,898.23x = 108,874.74 × 43,080.96
  4. Step 4: Simplify right side
    78,898.23x = 4,690,428,318.95
  5. Step 5: Solve for x
    x = 4,690,428,318.95/78,898.23
  6. Step 6: Final answer
    x = 59,449.09

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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.