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Finding the Fourth Proportional to 103,650.71, 155,487.17 and 28,771.17

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Solution

The fourth proportional to 103,650.71, 155,487.17 and 28,771.17 is: 43,159.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,650.71 : 155,487.17 = 28,771.17 : x
  2. Step 2: Convert to fraction form
    103,650.71/155,487.17 = 28,771.17/x
  3. Step 3: Cross multiply
    103,650.71x = 155,487.17 × 28,771.17
  4. Step 4: Simplify right side
    103,650.71x = 4,473,547,872.82
  5. Step 5: Solve for x
    x = 4,473,547,872.82/103,650.71
  6. Step 6: Final answer
    x = 43,159.84

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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.