Home / 77,983.40-116,990.89-25,378.76

Finding the Fourth Proportional to 77,983.40, 116,990.89 and 25,378.76

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Solution

The fourth proportional to 77,983.40, 116,990.89 and 25,378.76 is: 38,073.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,983.40 : 116,990.89 = 25,378.76 : x
  2. Step 2: Convert to fraction form
    77,983.40/116,990.89 = 25,378.76/x
  3. Step 3: Cross multiply
    77,983.40x = 116,990.89 × 25,378.76
  4. Step 4: Simplify right side
    77,983.40x = 2,969,083,071.10
  5. Step 5: Solve for x
    x = 2,969,083,071.10/77,983.40
  6. Step 6: Final answer
    x = 38,073.27

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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.