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Finding the Fourth Proportional to 71,802.27, 99,089.21 and 39,540.22

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Solution

The fourth proportional to 71,802.27, 99,089.21 and 39,540.22 is: 54,566.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,802.27 : 99,089.21 = 39,540.22 : x
  2. Step 2: Convert to fraction form
    71,802.27/99,089.21 = 39,540.22/x
  3. Step 3: Cross multiply
    71,802.27x = 99,089.21 × 39,540.22
  4. Step 4: Simplify right side
    71,802.27x = 3,918,009,014.15
  5. Step 5: Solve for x
    x = 3,918,009,014.15/71,802.27
  6. Step 6: Final answer
    x = 54,566.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.