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Finding the Fourth Proportional to 64,198.64, 88,557 and 38,687.60

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Solution

The fourth proportional to 64,198.64, 88,557 and 38,687.60 is: 53,366.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,198.64 : 88,557 = 38,687.60 : x
  2. Step 2: Convert to fraction form
    64,198.64/88,557 = 38,687.60/x
  3. Step 3: Cross multiply
    64,198.64x = 88,557 × 38,687.60
  4. Step 4: Simplify right side
    64,198.64x = 3,426,057,793.20
  5. Step 5: Solve for x
    x = 3,426,057,793.20/64,198.64
  6. Step 6: Final answer
    x = 53,366.52

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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.