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Finding the Fourth Proportional to 64,797.64, 89,418.46 and 39,306.92

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Solution

The fourth proportional to 64,797.64, 89,418.46 and 39,306.92 is: 54,242.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,797.64 : 89,418.46 = 39,306.92 : x
  2. Step 2: Convert to fraction form
    64,797.64/89,418.46 = 39,306.92/x
  3. Step 3: Cross multiply
    64,797.64x = 89,418.46 × 39,306.92
  4. Step 4: Simplify right side
    64,797.64x = 3,514,764,253.74
  5. Step 5: Solve for x
    x = 3,514,764,253.74/64,797.64
  6. Step 6: Final answer
    x = 54,242.16

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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.