Home / 83,389.20-115,094.47-76,664.18

Finding the Fourth Proportional to 83,389.20, 115,094.47 and 76,664.18

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Solution

The fourth proportional to 83,389.20, 115,094.47 and 76,664.18 is: 105,812.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,389.20 : 115,094.47 = 76,664.18 : x
  2. Step 2: Convert to fraction form
    83,389.20/115,094.47 = 76,664.18/x
  3. Step 3: Cross multiply
    83,389.20x = 115,094.47 × 76,664.18
  4. Step 4: Simplify right side
    83,389.20x = 8,823,622,589.61
  5. Step 5: Solve for x
    x = 8,823,622,589.61/83,389.20
  6. Step 6: Final answer
    x = 105,812.53

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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.