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Finding the Fourth Proportional to 103,707.69, 155,526.95 and 40,511.43

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Solution

The fourth proportional to 103,707.69, 155,526.95 and 40,511.43 is: 60,753.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,707.69 : 155,526.95 = 40,511.43 : x
  2. Step 2: Convert to fraction form
    103,707.69/155,526.95 = 40,511.43/x
  3. Step 3: Cross multiply
    103,707.69x = 155,526.95 × 40,511.43
  4. Step 4: Simplify right side
    103,707.69x = 6,300,618,945.48
  5. Step 5: Solve for x
    x = 6,300,618,945.48/103,707.69
  6. Step 6: Final answer
    x = 60,753.63

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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.