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Finding the Fourth Proportional to 72,394.40, 108,559.20 and 32,931.20

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Solution

The fourth proportional to 72,394.40, 108,559.20 and 32,931.20 is: 49,382.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,394.40 : 108,559.20 = 32,931.20 : x
  2. Step 2: Convert to fraction form
    72,394.40/108,559.20 = 32,931.20/x
  3. Step 3: Cross multiply
    72,394.40x = 108,559.20 × 32,931.20
  4. Step 4: Simplify right side
    72,394.40x = 3,574,984,727.04
  5. Step 5: Solve for x
    x = 3,574,984,727.04/72,394.40
  6. Step 6: Final answer
    x = 49,382.06

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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.