Home / 45,428.29-68,137.64-12,151.71

Finding the Fourth Proportional to 45,428.29, 68,137.64 and 12,151.71

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Solution

The fourth proportional to 45,428.29, 68,137.64 and 12,151.71 is: 18,226.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,428.29 : 68,137.64 = 12,151.71 : x
  2. Step 2: Convert to fraction form
    45,428.29/68,137.64 = 12,151.71/x
  3. Step 3: Cross multiply
    45,428.29x = 68,137.64 × 12,151.71
  4. Step 4: Simplify right side
    45,428.29x = 827,988,610.26
  5. Step 5: Solve for x
    x = 827,988,610.26/45,428.29
  6. Step 6: Final answer
    x = 18,226.28

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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.