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Finding the Fourth Proportional to 72,335.69, 108,513.80 and 22,419.71

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Solution

The fourth proportional to 72,335.69, 108,513.80 and 22,419.71 is: 33,632.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,335.69 : 108,513.80 = 22,419.71 : x
  2. Step 2: Convert to fraction form
    72,335.69/108,513.80 = 22,419.71/x
  3. Step 3: Cross multiply
    72,335.69x = 108,513.80 × 22,419.71
  4. Step 4: Simplify right side
    72,335.69x = 2,432,847,927.00
  5. Step 5: Solve for x
    x = 2,432,847,927.00/72,335.69
  6. Step 6: Final answer
    x = 33,632.75

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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.