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Finding the Fourth Proportional to 52,799.88, 72,879.11 and 30,151.20

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Solution

The fourth proportional to 52,799.88, 72,879.11 and 30,151.20 is: 41,617.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,799.88 : 72,879.11 = 30,151.20 : x
  2. Step 2: Convert to fraction form
    52,799.88/72,879.11 = 30,151.20/x
  3. Step 3: Cross multiply
    52,799.88x = 72,879.11 × 30,151.20
  4. Step 4: Simplify right side
    52,799.88x = 2,197,392,857.04
  5. Step 5: Solve for x
    x = 2,197,392,857.04/52,799.88
  6. Step 6: Final answer
    x = 41,617.38

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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.