Home / 89,231.61-123,149.91-53,421.60

Finding the Fourth Proportional to 89,231.61, 123,149.91 and 53,421.60

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Solution

The fourth proportional to 89,231.61, 123,149.91 and 53,421.60 is: 73,727.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,231.61 : 123,149.91 = 53,421.60 : x
  2. Step 2: Convert to fraction form
    89,231.61/123,149.91 = 53,421.60/x
  3. Step 3: Cross multiply
    89,231.61x = 123,149.91 × 53,421.60
  4. Step 4: Simplify right side
    89,231.61x = 6,578,865,232.06
  5. Step 5: Solve for x
    x = 6,578,865,232.06/89,231.61
  6. Step 6: Final answer
    x = 73,727.97

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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.