Home / 81,587.48-122,378.14-22,421.61

Finding the Fourth Proportional to 81,587.48, 122,378.14 and 22,421.61

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Solution

The fourth proportional to 81,587.48, 122,378.14 and 22,421.61 is: 33,631.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,587.48 : 122,378.14 = 22,421.61 : x
  2. Step 2: Convert to fraction form
    81,587.48/122,378.14 = 22,421.61/x
  3. Step 3: Cross multiply
    81,587.48x = 122,378.14 × 22,421.61
  4. Step 4: Simplify right side
    81,587.48x = 2,743,914,955.63
  5. Step 5: Solve for x
    x = 2,743,914,955.63/81,587.48
  6. Step 6: Final answer
    x = 33,631.57

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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.