Home / 78,818.10-108,773.38-43,008.72

Finding the Fourth Proportional to 78,818.10, 108,773.38 and 43,008.72

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Solution

The fourth proportional to 78,818.10, 108,773.38 and 43,008.72 is: 59,354.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,818.10 : 108,773.38 = 43,008.72 : x
  2. Step 2: Convert to fraction form
    78,818.10/108,773.38 = 43,008.72/x
  3. Step 3: Cross multiply
    78,818.10x = 108,773.38 × 43,008.72
  4. Step 4: Simplify right side
    78,818.10x = 4,678,203,843.87
  5. Step 5: Solve for x
    x = 4,678,203,843.87/78,818.10
  6. Step 6: Final answer
    x = 59,354.44

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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.