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Finding the Fourth Proportional to 64,321.59, 88,763.80 and 39,171.09

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Solution

The fourth proportional to 64,321.59, 88,763.80 and 39,171.09 is: 54,056.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,321.59 : 88,763.80 = 39,171.09 : x
  2. Step 2: Convert to fraction form
    64,321.59/88,763.80 = 39,171.09/x
  3. Step 3: Cross multiply
    64,321.59x = 88,763.80 × 39,171.09
  4. Step 4: Simplify right side
    64,321.59x = 3,476,975,106.92
  5. Step 5: Solve for x
    x = 3,476,975,106.92/64,321.59
  6. Step 6: Final answer
    x = 54,056.11

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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.