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Finding the Fourth Proportional to 89,663.76, 123,756.26 and 68,212.94

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Solution

The fourth proportional to 89,663.76, 123,756.26 and 68,212.94 is: 94,149.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,663.76 : 123,756.26 = 68,212.94 : x
  2. Step 2: Convert to fraction form
    89,663.76/123,756.26 = 68,212.94/x
  3. Step 3: Cross multiply
    89,663.76x = 123,756.26 × 68,212.94
  4. Step 4: Simplify right side
    89,663.76x = 8,441,777,378.16
  5. Step 5: Solve for x
    x = 8,441,777,378.16/89,663.76
  6. Step 6: Final answer
    x = 94,149.27

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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.