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Finding the Fourth Proportional to 71,448.86, 107,173.34 and 21,528.97

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Solution

The fourth proportional to 71,448.86, 107,173.34 and 21,528.97 is: 32,293.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,448.86 : 107,173.34 = 21,528.97 : x
  2. Step 2: Convert to fraction form
    71,448.86/107,173.34 = 21,528.97/x
  3. Step 3: Cross multiply
    71,448.86x = 107,173.34 × 21,528.97
  4. Step 4: Simplify right side
    71,448.86x = 2,307,331,621.66
  5. Step 5: Solve for x
    x = 2,307,331,621.66/71,448.86
  6. Step 6: Final answer
    x = 32,293.47

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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.