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Finding the Fourth Proportional to 72,179.84, 108,267.24 and 25,431.68

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Solution

The fourth proportional to 72,179.84, 108,267.24 and 25,431.68 is: 38,146.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,179.84 : 108,267.24 = 25,431.68 : x
  2. Step 2: Convert to fraction form
    72,179.84/108,267.24 = 25,431.68/x
  3. Step 3: Cross multiply
    72,179.84x = 108,267.24 × 25,431.68
  4. Step 4: Simplify right side
    72,179.84x = 2,753,417,802.16
  5. Step 5: Solve for x
    x = 2,753,417,802.16/72,179.84
  6. Step 6: Final answer
    x = 38,146.63

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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.