Home / 83,718.36-115,529.76-47,910.96

Finding the Fourth Proportional to 83,718.36, 115,529.76 and 47,910.96

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Solution

The fourth proportional to 83,718.36, 115,529.76 and 47,910.96 is: 66,116.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,718.36 : 115,529.76 = 47,910.96 : x
  2. Step 2: Convert to fraction form
    83,718.36/115,529.76 = 47,910.96/x
  3. Step 3: Cross multiply
    83,718.36x = 115,529.76 × 47,910.96
  4. Step 4: Simplify right side
    83,718.36x = 5,535,141,710.17
  5. Step 5: Solve for x
    x = 5,535,141,710.17/83,718.36
  6. Step 6: Final answer
    x = 66,116.22

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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.