Home / 89,618.76-123,669.61-49,331.68

Finding the Fourth Proportional to 89,618.76, 123,669.61 and 49,331.68

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Solution

The fourth proportional to 89,618.76, 123,669.61 and 49,331.68 is: 68,075.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,618.76 : 123,669.61 = 49,331.68 : x
  2. Step 2: Convert to fraction form
    89,618.76/123,669.61 = 49,331.68/x
  3. Step 3: Cross multiply
    89,618.76x = 123,669.61 × 49,331.68
  4. Step 4: Simplify right side
    89,618.76x = 6,100,829,193.74
  5. Step 5: Solve for x
    x = 6,100,829,193.74/89,618.76
  6. Step 6: Final answer
    x = 68,075.36

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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.