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Finding the Fourth Proportional to 72,351.60, 108,531.50 and 22,438.79

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Solution

The fourth proportional to 72,351.60, 108,531.50 and 22,438.79 is: 33,659.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,351.60 : 108,531.50 = 22,438.79 : x
  2. Step 2: Convert to fraction form
    72,351.60/108,531.50 = 22,438.79/x
  3. Step 3: Cross multiply
    72,351.60x = 108,531.50 × 22,438.79
  4. Step 4: Simplify right side
    72,351.60x = 2,435,315,289.03
  5. Step 5: Solve for x
    x = 2,435,315,289.03/72,351.60
  6. Step 6: Final answer
    x = 33,659.45

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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.