Home / 78,000.33-107,680.29-54,085.50

Finding the Fourth Proportional to 78,000.33, 107,680.29 and 54,085.50

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Solution

The fourth proportional to 78,000.33, 107,680.29 and 54,085.50 is: 74,665.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,000.33 : 107,680.29 = 54,085.50 : x
  2. Step 2: Convert to fraction form
    78,000.33/107,680.29 = 54,085.50/x
  3. Step 3: Cross multiply
    78,000.33x = 107,680.29 × 54,085.50
  4. Step 4: Simplify right side
    78,000.33x = 5,823,942,324.80
  5. Step 5: Solve for x
    x = 5,823,942,324.80/78,000.33
  6. Step 6: Final answer
    x = 74,665.61

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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.