Home / 72,178.09-108,264.70-25,429.75

Finding the Fourth Proportional to 72,178.09, 108,264.70 and 25,429.75

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Solution

The fourth proportional to 72,178.09, 108,264.70 and 25,429.75 is: 38,143.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,178.09 : 108,264.70 = 25,429.75 : x
  2. Step 2: Convert to fraction form
    72,178.09/108,264.70 = 25,429.75/x
  3. Step 3: Cross multiply
    72,178.09x = 108,264.70 × 25,429.75
  4. Step 4: Simplify right side
    72,178.09x = 2,753,144,254.83
  5. Step 5: Solve for x
    x = 2,753,144,254.83/72,178.09
  6. Step 6: Final answer
    x = 38,143.77

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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.