Home / 89,459.96-123,466.40-57,721.20

Finding the Fourth Proportional to 89,459.96, 123,466.40 and 57,721.20

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Solution

The fourth proportional to 89,459.96, 123,466.40 and 57,721.20 is: 79,662.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,459.96 : 123,466.40 = 57,721.20 : x
  2. Step 2: Convert to fraction form
    89,459.96/123,466.40 = 57,721.20/x
  3. Step 3: Cross multiply
    89,459.96x = 123,466.40 × 57,721.20
  4. Step 4: Simplify right side
    89,459.96x = 7,126,628,767.68
  5. Step 5: Solve for x
    x = 7,126,628,767.68/89,459.96
  6. Step 6: Final answer
    x = 79,662.78

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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.