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Finding the Fourth Proportional to 40,564.57, 60,846.89 and 10,578.78

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Solution

The fourth proportional to 40,564.57, 60,846.89 and 10,578.78 is: 15,868.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,564.57 : 60,846.89 = 10,578.78 : x
  2. Step 2: Convert to fraction form
    40,564.57/60,846.89 = 10,578.78/x
  3. Step 3: Cross multiply
    40,564.57x = 60,846.89 × 10,578.78
  4. Step 4: Simplify right side
    40,564.57x = 643,685,889.44
  5. Step 5: Solve for x
    x = 643,685,889.44/40,564.57
  6. Step 6: Final answer
    x = 15,868.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.