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Finding the Fourth Proportional to 112,805.43, 169,208.52 and 28,565.55

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Solution

The fourth proportional to 112,805.43, 169,208.52 and 28,565.55 is: 42,848.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,805.43 : 169,208.52 = 28,565.55 : x
  2. Step 2: Convert to fraction form
    112,805.43/169,208.52 = 28,565.55/x
  3. Step 3: Cross multiply
    112,805.43x = 169,208.52 × 28,565.55
  4. Step 4: Simplify right side
    112,805.43x = 4,833,534,438.49
  5. Step 5: Solve for x
    x = 4,833,534,438.49/112,805.43
  6. Step 6: Final answer
    x = 42,848.42

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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.