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Finding the Fourth Proportional to 72,912.80, 109,369.20 and 23,008.19

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Solution

The fourth proportional to 72,912.80, 109,369.20 and 23,008.19 is: 34,512.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,912.80 : 109,369.20 = 23,008.19 : x
  2. Step 2: Convert to fraction form
    72,912.80/109,369.20 = 23,008.19/x
  3. Step 3: Cross multiply
    72,912.80x = 109,369.20 × 23,008.19
  4. Step 4: Simplify right side
    72,912.80x = 2,516,387,333.75
  5. Step 5: Solve for x
    x = 2,516,387,333.75/72,912.80
  6. Step 6: Final answer
    x = 34,512.29

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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.