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Finding the Fourth Proportional to 65,156.79, 89,908.79 and 36,478.02

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Solution

The fourth proportional to 65,156.79, 89,908.79 and 36,478.02 is: 50,335.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,156.79 : 89,908.79 = 36,478.02 : x
  2. Step 2: Convert to fraction form
    65,156.79/89,908.79 = 36,478.02/x
  3. Step 3: Cross multiply
    65,156.79x = 89,908.79 × 36,478.02
  4. Step 4: Simplify right side
    65,156.79x = 3,279,694,457.41
  5. Step 5: Solve for x
    x = 3,279,694,457.41/65,156.79
  6. Step 6: Final answer
    x = 50,335.42

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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.