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Finding the Fourth Proportional to 57,808.40, 86,711.38 and 26,643.64

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Solution

The fourth proportional to 57,808.40, 86,711.38 and 26,643.64 is: 39,964.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,808.40 : 86,711.38 = 26,643.64 : x
  2. Step 2: Convert to fraction form
    57,808.40/86,711.38 = 26,643.64/x
  3. Step 3: Cross multiply
    57,808.40x = 86,711.38 × 26,643.64
  4. Step 4: Simplify right side
    57,808.40x = 2,310,306,792.62
  5. Step 5: Solve for x
    x = 2,310,306,792.62/57,808.40
  6. Step 6: Final answer
    x = 39,964.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.