Home / 45,639.78-68,463.92-12,360.12

Finding the Fourth Proportional to 45,639.78, 68,463.92 and 12,360.12

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Solution

The fourth proportional to 45,639.78, 68,463.92 and 12,360.12 is: 18,541.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,639.78 : 68,463.92 = 12,360.12 : x
  2. Step 2: Convert to fraction form
    45,639.78/68,463.92 = 12,360.12/x
  3. Step 3: Cross multiply
    45,639.78x = 68,463.92 × 12,360.12
  4. Step 4: Simplify right side
    45,639.78x = 846,222,266.87
  5. Step 5: Solve for x
    x = 846,222,266.87/45,639.78
  6. Step 6: Final answer
    x = 18,541.33

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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.