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Finding the Fourth Proportional to 71,969.84, 108,048.31 and 55,341.55

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Solution

The fourth proportional to 71,969.84, 108,048.31 and 55,341.55 is: 83,084.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,969.84 : 108,048.31 = 55,341.55 : x
  2. Step 2: Convert to fraction form
    71,969.84/108,048.31 = 55,341.55/x
  3. Step 3: Cross multiply
    71,969.84x = 108,048.31 × 55,341.55
  4. Step 4: Simplify right side
    71,969.84x = 5,979,560,950.28
  5. Step 5: Solve for x
    x = 5,979,560,950.28/71,969.84
  6. Step 6: Final answer
    x = 83,084.26

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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.