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Finding the Fourth Proportional to 103,534.76, 155,305.58 and 28,648.62

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Solution

The fourth proportional to 103,534.76, 155,305.58 and 28,648.62 is: 42,973.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,534.76 : 155,305.58 = 28,648.62 : x
  2. Step 2: Convert to fraction form
    103,534.76/155,305.58 = 28,648.62/x
  3. Step 3: Cross multiply
    103,534.76x = 155,305.58 × 28,648.62
  4. Step 4: Simplify right side
    103,534.76x = 4,449,290,545.30
  5. Step 5: Solve for x
    x = 4,449,290,545.30/103,534.76
  6. Step 6: Final answer
    x = 42,973.88

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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.