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Finding the Fourth Proportional to 72,257.32, 108,420.54 and 25,532.20

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Solution

The fourth proportional to 72,257.32, 108,420.54 and 25,532.20 is: 38,310.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,257.32 : 108,420.54 = 25,532.20 : x
  2. Step 2: Convert to fraction form
    72,257.32/108,420.54 = 25,532.20/x
  3. Step 3: Cross multiply
    72,257.32x = 108,420.54 × 25,532.20
  4. Step 4: Simplify right side
    72,257.32x = 2,768,214,911.39
  5. Step 5: Solve for x
    x = 2,768,214,911.39/72,257.32
  6. Step 6: Final answer
    x = 38,310.51

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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.