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Finding the Fourth Proportional to 72,405.71, 108,619.51 and 25,034.39

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Solution

The fourth proportional to 72,405.71, 108,619.51 and 25,034.39 is: 37,555.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,405.71 : 108,619.51 = 25,034.39 : x
  2. Step 2: Convert to fraction form
    72,405.71/108,619.51 = 25,034.39/x
  3. Step 3: Cross multiply
    72,405.71x = 108,619.51 × 25,034.39
  4. Step 4: Simplify right side
    72,405.71x = 2,719,223,174.95
  5. Step 5: Solve for x
    x = 2,719,223,174.95/72,405.71
  6. Step 6: Final answer
    x = 37,555.37

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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.