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Finding the Fourth Proportional to 78,803.10, 118,220.85 and 26,250.30

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Solution

The fourth proportional to 78,803.10, 118,220.85 and 26,250.30 is: 39,380.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,803.10 : 118,220.85 = 26,250.30 : x
  2. Step 2: Convert to fraction form
    78,803.10/118,220.85 = 26,250.30/x
  3. Step 3: Cross multiply
    78,803.10x = 118,220.85 × 26,250.30
  4. Step 4: Simplify right side
    78,803.10x = 3,103,332,778.76
  5. Step 5: Solve for x
    x = 3,103,332,778.76/78,803.10
  6. Step 6: Final answer
    x = 39,380.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.