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Finding the Fourth Proportional to 71,421.08, 107,096.99 and 21,491.87

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Solution

The fourth proportional to 71,421.08, 107,096.99 and 21,491.87 is: 32,227.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,421.08 : 107,096.99 = 21,491.87 : x
  2. Step 2: Convert to fraction form
    71,421.08/107,096.99 = 21,491.87/x
  3. Step 3: Cross multiply
    71,421.08x = 107,096.99 × 21,491.87
  4. Step 4: Simplify right side
    71,421.08x = 2,301,713,943.53
  5. Step 5: Solve for x
    x = 2,301,713,943.53/71,421.08
  6. Step 6: Final answer
    x = 32,227.38

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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.