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Finding the Fourth Proportional to 64,205.64, 88,566.64 and 38,694.60

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Solution

The fourth proportional to 64,205.64, 88,566.64 and 38,694.60 is: 53,376.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,205.64 : 88,566.64 = 38,694.60 : x
  2. Step 2: Convert to fraction form
    64,205.64/88,566.64 = 38,694.60/x
  3. Step 3: Cross multiply
    64,205.64x = 88,566.64 × 38,694.60
  4. Step 4: Simplify right side
    64,205.64x = 3,427,050,708.14
  5. Step 5: Solve for x
    x = 3,427,050,708.14/64,205.64
  6. Step 6: Final answer
    x = 53,376.16

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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.