Home / 89,356.57-123,315.21-49,071.42

Finding the Fourth Proportional to 89,356.57, 123,315.21 and 49,071.42

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Solution

The fourth proportional to 89,356.57, 123,315.21 and 49,071.42 is: 67,720.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,356.57 : 123,315.21 = 49,071.42 : x
  2. Step 2: Convert to fraction form
    89,356.57/123,315.21 = 49,071.42/x
  3. Step 3: Cross multiply
    89,356.57x = 123,315.21 × 49,071.42
  4. Step 4: Simplify right side
    89,356.57x = 6,051,252,462.30
  5. Step 5: Solve for x
    x = 6,051,252,462.30/89,356.57
  6. Step 6: Final answer
    x = 67,720.29

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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.