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Finding the Fourth Proportional to 80,762.60, 121,069.38 and 43,348.88

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Solution

The fourth proportional to 80,762.60, 121,069.38 and 43,348.88 is: 64,983.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,762.60 : 121,069.38 = 43,348.88 : x
  2. Step 2: Convert to fraction form
    80,762.60/121,069.38 = 43,348.88/x
  3. Step 3: Cross multiply
    80,762.60x = 121,069.38 × 43,348.88
  4. Step 4: Simplify right side
    80,762.60x = 5,248,222,025.29
  5. Step 5: Solve for x
    x = 5,248,222,025.29/80,762.60
  6. Step 6: Final answer
    x = 64,983.32

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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.