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Finding the Fourth Proportional to 65,079.48, 89,809.08 and 36,398.79

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Solution

The fourth proportional to 65,079.48, 89,809.08 and 36,398.79 is: 50,230.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,079.48 : 89,809.08 = 36,398.79 : x
  2. Step 2: Convert to fraction form
    65,079.48/89,809.08 = 36,398.79/x
  3. Step 3: Cross multiply
    65,079.48x = 89,809.08 × 36,398.79
  4. Step 4: Simplify right side
    65,079.48x = 3,268,942,061.48
  5. Step 5: Solve for x
    x = 3,268,942,061.48/65,079.48
  6. Step 6: Final answer
    x = 50,230.00

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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.