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Finding the Fourth Proportional to 80,766.90, 111,457.35 and 47,232.90

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Solution

The fourth proportional to 80,766.90, 111,457.35 and 47,232.90 is: 65,180.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,766.90 : 111,457.35 = 47,232.90 : x
  2. Step 2: Convert to fraction form
    80,766.90/111,457.35 = 47,232.90/x
  3. Step 3: Cross multiply
    80,766.90x = 111,457.35 × 47,232.90
  4. Step 4: Simplify right side
    80,766.90x = 5,264,453,866.82
  5. Step 5: Solve for x
    x = 5,264,453,866.82/80,766.90
  6. Step 6: Final answer
    x = 65,180.83

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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.