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Finding the Fourth Proportional to 89,896.80, 124,104.23 and 65,670.57

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Solution

The fourth proportional to 89,896.80, 124,104.23 and 65,670.57 is: 90,659.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,896.80 : 124,104.23 = 65,670.57 : x
  2. Step 2: Convert to fraction form
    89,896.80/124,104.23 = 65,670.57/x
  3. Step 3: Cross multiply
    89,896.80x = 124,104.23 × 65,670.57
  4. Step 4: Simplify right side
    89,896.80x = 8,149,995,441.42
  5. Step 5: Solve for x
    x = 8,149,995,441.42/89,896.80
  6. Step 6: Final answer
    x = 90,659.46

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1.5x scale

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.