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Finding the Fourth Proportional to 72,608.04, 108,917.52 and 20,017.08

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Solution

The fourth proportional to 72,608.04, 108,917.52 and 20,017.08 is: 30,027.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,608.04 : 108,917.52 = 20,017.08 : x
  2. Step 2: Convert to fraction form
    72,608.04/108,917.52 = 20,017.08/x
  3. Step 3: Cross multiply
    72,608.04x = 108,917.52 × 20,017.08
  4. Step 4: Simplify right side
    72,608.04x = 2,180,210,711.24
  5. Step 5: Solve for x
    x = 2,180,210,711.24/72,608.04
  6. Step 6: Final answer
    x = 30,027.13

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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.