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Finding the Fourth Proportional to 79,665.84, 119,572.61 and 40,250.66

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Solution

The fourth proportional to 79,665.84, 119,572.61 and 40,250.66 is: 60,413.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,665.84 : 119,572.61 = 40,250.66 : x
  2. Step 2: Convert to fraction form
    79,665.84/119,572.61 = 40,250.66/x
  3. Step 3: Cross multiply
    79,665.84x = 119,572.61 × 40,250.66
  4. Step 4: Simplify right side
    79,665.84x = 4,812,875,671.31
  5. Step 5: Solve for x
    x = 4,812,875,671.31/79,665.84
  6. Step 6: Final answer
    x = 60,413.29

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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.