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Finding the Fourth Proportional to 65,661.52, 90,606.16 and 36,976.62

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Solution

The fourth proportional to 65,661.52, 90,606.16 and 36,976.62 is: 51,023.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,661.52 : 90,606.16 = 36,976.62 : x
  2. Step 2: Convert to fraction form
    65,661.52/90,606.16 = 36,976.62/x
  3. Step 3: Cross multiply
    65,661.52x = 90,606.16 × 36,976.62
  4. Step 4: Simplify right side
    65,661.52x = 3,350,309,547.98
  5. Step 5: Solve for x
    x = 3,350,309,547.98/65,661.52
  6. Step 6: Final answer
    x = 51,023.94

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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.