Home / 81,347.04-121,975.89-25,171.52

Finding the Fourth Proportional to 81,347.04, 121,975.89 and 25,171.52

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Solution

The fourth proportional to 81,347.04, 121,975.89 and 25,171.52 is: 37,743.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,347.04 : 121,975.89 = 25,171.52 : x
  2. Step 2: Convert to fraction form
    81,347.04/121,975.89 = 25,171.52/x
  3. Step 3: Cross multiply
    81,347.04x = 121,975.89 × 25,171.52
  4. Step 4: Simplify right side
    81,347.04x = 3,070,317,944.77
  5. Step 5: Solve for x
    x = 3,070,317,944.77/81,347.04
  6. Step 6: Final answer
    x = 37,743.45

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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.