Home / 83,669.40-115,366.38-56,829.24

Finding the Fourth Proportional to 83,669.40, 115,366.38 and 56,829.24

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Solution

The fourth proportional to 83,669.40, 115,366.38 and 56,829.24 is: 78,358.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,669.40 : 115,366.38 = 56,829.24 : x
  2. Step 2: Convert to fraction form
    83,669.40/115,366.38 = 56,829.24/x
  3. Step 3: Cross multiply
    83,669.40x = 115,366.38 × 56,829.24
  4. Step 4: Simplify right side
    83,669.40x = 6,556,183,696.95
  5. Step 5: Solve for x
    x = 6,556,183,696.95/83,669.40
  6. Step 6: Final answer
    x = 78,358.20

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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.