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Finding the Fourth Proportional to 72,920.19, 109,380.32 and 17,516.19

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Solution

The fourth proportional to 72,920.19, 109,380.32 and 17,516.19 is: 26,274.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,920.19 : 109,380.32 = 17,516.19 : x
  2. Step 2: Convert to fraction form
    72,920.19/109,380.32 = 17,516.19/x
  3. Step 3: Cross multiply
    72,920.19x = 109,380.32 × 17,516.19
  4. Step 4: Simplify right side
    72,920.19x = 1,915,926,467.38
  5. Step 5: Solve for x
    x = 1,915,926,467.38/72,920.19
  6. Step 6: Final answer
    x = 26,274.29

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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.