Home / 83,478.62-115,353.26-60,778.20

Finding the Fourth Proportional to 83,478.62, 115,353.26 and 60,778.20

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Solution

The fourth proportional to 83,478.62, 115,353.26 and 60,778.20 is: 83,985.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,478.62 : 115,353.26 = 60,778.20 : x
  2. Step 2: Convert to fraction form
    83,478.62/115,353.26 = 60,778.20/x
  3. Step 3: Cross multiply
    83,478.62x = 115,353.26 × 60,778.20
  4. Step 4: Simplify right side
    83,478.62x = 7,010,963,506.93
  5. Step 5: Solve for x
    x = 7,010,963,506.93/83,478.62
  6. Step 6: Final answer
    x = 83,985.14

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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.