Home / 83,948.18-115,856.66-62,690.54

Finding the Fourth Proportional to 83,948.18, 115,856.66 and 62,690.54

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Solution

The fourth proportional to 83,948.18, 115,856.66 and 62,690.54 is: 86,519.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,948.18 : 115,856.66 = 62,690.54 : x
  2. Step 2: Convert to fraction form
    83,948.18/115,856.66 = 62,690.54/x
  3. Step 3: Cross multiply
    83,948.18x = 115,856.66 × 62,690.54
  4. Step 4: Simplify right side
    83,948.18x = 7,263,116,807.13
  5. Step 5: Solve for x
    x = 7,263,116,807.13/83,948.18
  6. Step 6: Final answer
    x = 86,519.05

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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.