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Finding the Fourth Proportional to 71,323.99, 106,985.88 and 21,404.00

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Solution

The fourth proportional to 71,323.99, 106,985.88 and 21,404.00 is: 32,105.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,323.99 : 106,985.88 = 21,404.00 : x
  2. Step 2: Convert to fraction form
    71,323.99/106,985.88 = 21,404.00/x
  3. Step 3: Cross multiply
    71,323.99x = 106,985.88 × 21,404.00
  4. Step 4: Simplify right side
    71,323.99x = 2,289,926,042.98
  5. Step 5: Solve for x
    x = 2,289,926,042.98/71,323.99
  6. Step 6: Final answer
    x = 32,105.97

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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.