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Finding the Fourth Proportional to 72,932.40, 109,388.88 and 20,337.48

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Solution

The fourth proportional to 72,932.40, 109,388.88 and 20,337.48 is: 30,503.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,932.40 : 109,388.88 = 20,337.48 : x
  2. Step 2: Convert to fraction form
    72,932.40/109,388.88 = 20,337.48/x
  3. Step 3: Cross multiply
    72,932.40x = 109,388.88 × 20,337.48
  4. Step 4: Simplify right side
    72,932.40x = 2,224,694,159.22
  5. Step 5: Solve for x
    x = 2,224,694,159.22/72,932.40
  6. Step 6: Final answer
    x = 30,503.51

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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.