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Finding the Fourth Proportional to 72,034.74, 107,901.41 and 57,918.33

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Solution

The fourth proportional to 72,034.74, 107,901.41 and 57,918.33 is: 86,756.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,034.74 : 107,901.41 = 57,918.33 : x
  2. Step 2: Convert to fraction form
    72,034.74/107,901.41 = 57,918.33/x
  3. Step 3: Cross multiply
    72,034.74x = 107,901.41 × 57,918.33
  4. Step 4: Simplify right side
    72,034.74x = 6,249,469,182.25
  5. Step 5: Solve for x
    x = 6,249,469,182.25/72,034.74
  6. Step 6: Final answer
    x = 86,756.32

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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.