Home / 83,423.16-115,126.18-47,121.72

Finding the Fourth Proportional to 83,423.16, 115,126.18 and 47,121.72

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Solution

The fourth proportional to 83,423.16, 115,126.18 and 47,121.72 is: 65,029.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,423.16 : 115,126.18 = 47,121.72 : x
  2. Step 2: Convert to fraction form
    83,423.16/115,126.18 = 47,121.72/x
  3. Step 3: Cross multiply
    83,423.16x = 115,126.18 × 47,121.72
  4. Step 4: Simplify right side
    83,423.16x = 5,424,943,618.63
  5. Step 5: Solve for x
    x = 5,424,943,618.63/83,423.16
  6. Step 6: Final answer
    x = 65,029.23

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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.