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Finding the Fourth Proportional to 71,323.43, 106,985.04 and 21,403.44

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Solution

The fourth proportional to 71,323.43, 106,985.04 and 21,403.44 is: 32,105.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,323.43 : 106,985.04 = 21,403.44 : x
  2. Step 2: Convert to fraction form
    71,323.43/106,985.04 = 21,403.44/x
  3. Step 3: Cross multiply
    71,323.43x = 106,985.04 × 21,403.44
  4. Step 4: Simplify right side
    71,323.43x = 2,289,847,777.52
  5. Step 5: Solve for x
    x = 2,289,847,777.52/71,323.43
  6. Step 6: Final answer
    x = 32,105.13

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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.