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Finding the Fourth Proportional to 63,643.80, 95,436.90 and 28,565.40

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Solution

The fourth proportional to 63,643.80, 95,436.90 and 28,565.40 is: 42,835.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,643.80 : 95,436.90 = 28,565.40 : x
  2. Step 2: Convert to fraction form
    63,643.80/95,436.90 = 28,565.40/x
  3. Step 3: Cross multiply
    63,643.80x = 95,436.90 × 28,565.40
  4. Step 4: Simplify right side
    63,643.80x = 2,726,193,223.26
  5. Step 5: Solve for x
    x = 2,726,193,223.26/63,643.80
  6. Step 6: Final answer
    x = 42,835.17

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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.