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Finding the Fourth Proportional to 71,626.81, 107,440.11 and 19,036.30

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Solution

The fourth proportional to 71,626.81, 107,440.11 and 19,036.30 is: 28,554.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,626.81 : 107,440.11 = 19,036.30 : x
  2. Step 2: Convert to fraction form
    71,626.81/107,440.11 = 19,036.30/x
  3. Step 3: Cross multiply
    71,626.81x = 107,440.11 × 19,036.30
  4. Step 4: Simplify right side
    71,626.81x = 2,045,262,165.99
  5. Step 5: Solve for x
    x = 2,045,262,165.99/71,626.81
  6. Step 6: Final answer
    x = 28,554.42

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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.