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Finding the Fourth Proportional to 49,585.50, 74,378.25 and 12,649.50

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Solution

The fourth proportional to 49,585.50, 74,378.25 and 12,649.50 is: 18,974.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,585.50 : 74,378.25 = 12,649.50 : x
  2. Step 2: Convert to fraction form
    49,585.50/74,378.25 = 12,649.50/x
  3. Step 3: Cross multiply
    49,585.50x = 74,378.25 × 12,649.50
  4. Step 4: Simplify right side
    49,585.50x = 940,847,673.38
  5. Step 5: Solve for x
    x = 940,847,673.38/49,585.50
  6. Step 6: Final answer
    x = 18,974.25

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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.