Home / 74,223.38-102,428.26-40,689.38

Finding the Fourth Proportional to 74,223.38, 102,428.26 and 40,689.38

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Solution

The fourth proportional to 74,223.38, 102,428.26 and 40,689.38 is: 56,151.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,223.38 : 102,428.26 = 40,689.38 : x
  2. Step 2: Convert to fraction form
    74,223.38/102,428.26 = 40,689.38/x
  3. Step 3: Cross multiply
    74,223.38x = 102,428.26 × 40,689.38
  4. Step 4: Simplify right side
    74,223.38x = 4,167,741,780.01
  5. Step 5: Solve for x
    x = 4,167,741,780.01/74,223.38
  6. Step 6: Final answer
    x = 56,151.34

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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.