Home / 81,397.48-121,715.34-57,952.84

Finding the Fourth Proportional to 81,397.48, 121,715.34 and 57,952.84

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Solution

The fourth proportional to 81,397.48, 121,715.34 and 57,952.84 is: 86,658.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,397.48 : 121,715.34 = 57,952.84 : x
  2. Step 2: Convert to fraction form
    81,397.48/121,715.34 = 57,952.84/x
  3. Step 3: Cross multiply
    81,397.48x = 121,715.34 × 57,952.84
  4. Step 4: Simplify right side
    81,397.48x = 7,053,749,624.57
  5. Step 5: Solve for x
    x = 7,053,749,624.57/81,397.48
  6. Step 6: Final answer
    x = 86,658.08

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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.