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Finding the Fourth Proportional to 72,928.32, 109,394.80 and 23,008.88

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Solution

The fourth proportional to 72,928.32, 109,394.80 and 23,008.88 is: 34,514.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,928.32 : 109,394.80 = 23,008.88 : x
  2. Step 2: Convert to fraction form
    72,928.32/109,394.80 = 23,008.88/x
  3. Step 3: Cross multiply
    72,928.32x = 109,394.80 × 23,008.88
  4. Step 4: Simplify right side
    72,928.32x = 2,517,051,825.82
  5. Step 5: Solve for x
    x = 2,517,051,825.82/72,928.32
  6. Step 6: Final answer
    x = 34,514.05

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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.