Home / 83,778.75-115,614.68-47,980.62

Finding the Fourth Proportional to 83,778.75, 115,614.68 and 47,980.62

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Solution

The fourth proportional to 83,778.75, 115,614.68 and 47,980.62 is: 66,213.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,778.75 : 115,614.68 = 47,980.62 : x
  2. Step 2: Convert to fraction form
    83,778.75/115,614.68 = 47,980.62/x
  3. Step 3: Cross multiply
    83,778.75x = 115,614.68 × 47,980.62
  4. Step 4: Simplify right side
    83,778.75x = 5,547,263,787.60
  5. Step 5: Solve for x
    x = 5,547,263,787.60/83,778.75
  6. Step 6: Final answer
    x = 66,213.26

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1.5x scale

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.