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Finding the Fourth Proportional to 78,855.92, 108,820.24 and 43,047.44

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Solution

The fourth proportional to 78,855.92, 108,820.24 and 43,047.44 is: 59,404.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,855.92 : 108,820.24 = 43,047.44 : x
  2. Step 2: Convert to fraction form
    78,855.92/108,820.24 = 43,047.44/x
  3. Step 3: Cross multiply
    78,855.92x = 108,820.24 × 43,047.44
  4. Step 4: Simplify right side
    78,855.92x = 4,684,432,752.19
  5. Step 5: Solve for x
    x = 4,684,432,752.19/78,855.92
  6. Step 6: Final answer
    x = 59,404.96

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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.