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Finding the Fourth Proportional to 103,543.88, 155,316.04 and 28,664.24

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Solution

The fourth proportional to 103,543.88, 155,316.04 and 28,664.24 is: 42,996.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,543.88 : 155,316.04 = 28,664.24 : x
  2. Step 2: Convert to fraction form
    103,543.88/155,316.04 = 28,664.24/x
  3. Step 3: Cross multiply
    103,543.88x = 155,316.04 × 28,664.24
  4. Step 4: Simplify right side
    103,543.88x = 4,452,016,246.41
  5. Step 5: Solve for x
    x = 4,452,016,246.41/103,543.88
  6. Step 6: Final answer
    x = 42,996.42

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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.