Home / 63,521.11-87,643.92-39,639.07

Finding the Fourth Proportional to 63,521.11, 87,643.92 and 39,639.07

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Solution

The fourth proportional to 63,521.11, 87,643.92 and 39,639.07 is: 54,692.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,521.11 : 87,643.92 = 39,639.07 : x
  2. Step 2: Convert to fraction form
    63,521.11/87,643.92 = 39,639.07/x
  3. Step 3: Cross multiply
    63,521.11x = 87,643.92 × 39,639.07
  4. Step 4: Simplify right side
    63,521.11x = 3,474,123,479.95
  5. Step 5: Solve for x
    x = 3,474,123,479.95/63,521.11
  6. Step 6: Final answer
    x = 54,692.42

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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.