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Finding the Fourth Proportional to 71,730.91, 107,550.21 and 34,290.14

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Solution

The fourth proportional to 71,730.91, 107,550.21 and 34,290.14 is: 51,413.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,730.91 : 107,550.21 = 34,290.14 : x
  2. Step 2: Convert to fraction form
    71,730.91/107,550.21 = 34,290.14/x
  3. Step 3: Cross multiply
    71,730.91x = 107,550.21 × 34,290.14
  4. Step 4: Simplify right side
    71,730.91x = 3,687,912,026.80
  5. Step 5: Solve for x
    x = 3,687,912,026.80/71,730.91
  6. Step 6: Final answer
    x = 51,413.15

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1.5x scale

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.