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Finding the Fourth Proportional to 72,246.40, 108,369.60 and 25,493.20

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Solution

The fourth proportional to 72,246.40, 108,369.60 and 25,493.20 is: 38,239.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,246.40 : 108,369.60 = 25,493.20 : x
  2. Step 2: Convert to fraction form
    72,246.40/108,369.60 = 25,493.20/x
  3. Step 3: Cross multiply
    72,246.40x = 108,369.60 × 25,493.20
  4. Step 4: Simplify right side
    72,246.40x = 2,762,687,886.72
  5. Step 5: Solve for x
    x = 2,762,687,886.72/72,246.40
  6. Step 6: Final answer
    x = 38,239.80

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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.