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Finding the Fourth Proportional to 72,958.56, 109,357.65 and 28,577.04

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Solution

The fourth proportional to 72,958.56, 109,357.65 and 28,577.04 is: 42,834.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,958.56 : 109,357.65 = 28,577.04 : x
  2. Step 2: Convert to fraction form
    72,958.56/109,357.65 = 28,577.04/x
  3. Step 3: Cross multiply
    72,958.56x = 109,357.65 × 28,577.04
  4. Step 4: Simplify right side
    72,958.56x = 3,125,117,938.36
  5. Step 5: Solve for x
    x = 3,125,117,938.36/72,958.56
  6. Step 6: Final answer
    x = 42,834.15

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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.