Home / 80,851.08-121,333.26-45,275.40

Finding the Fourth Proportional to 80,851.08, 121,333.26 and 45,275.40

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Solution

The fourth proportional to 80,851.08, 121,333.26 and 45,275.40 is: 67,944.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,851.08 : 121,333.26 = 45,275.40 : x
  2. Step 2: Convert to fraction form
    80,851.08/121,333.26 = 45,275.40/x
  3. Step 3: Cross multiply
    80,851.08x = 121,333.26 × 45,275.40
  4. Step 4: Simplify right side
    80,851.08x = 5,493,411,879.80
  5. Step 5: Solve for x
    x = 5,493,411,879.80/80,851.08
  6. Step 6: Final answer
    x = 67,944.82

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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.