Home / 81,982.16-113,143.45-47,988.58

Finding the Fourth Proportional to 81,982.16, 113,143.45 and 47,988.58

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Solution

The fourth proportional to 81,982.16, 113,143.45 and 47,988.58 is: 66,228.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,982.16 : 113,143.45 = 47,988.58 : x
  2. Step 2: Convert to fraction form
    81,982.16/113,143.45 = 47,988.58/x
  3. Step 3: Cross multiply
    81,982.16x = 113,143.45 × 47,988.58
  4. Step 4: Simplify right side
    81,982.16x = 5,429,593,501.80
  5. Step 5: Solve for x
    x = 5,429,593,501.80/81,982.16
  6. Step 6: Final answer
    x = 66,228.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.