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Finding the Fourth Proportional to 60,756.48, 90,979.20 and 45,204.48

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Solution

The fourth proportional to 60,756.48, 90,979.20 and 45,204.48 is: 67,691.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,756.48 : 90,979.20 = 45,204.48 : x
  2. Step 2: Convert to fraction form
    60,756.48/90,979.20 = 45,204.48/x
  3. Step 3: Cross multiply
    60,756.48x = 90,979.20 × 45,204.48
  4. Step 4: Simplify right side
    60,756.48x = 4,112,667,426.82
  5. Step 5: Solve for x
    x = 4,112,667,426.82/60,756.48
  6. Step 6: Final answer
    x = 67,691.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.