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Finding the Fourth Proportional to 71,662.20, 107,494.20 and 19,071.36

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Solution

The fourth proportional to 71,662.20, 107,494.20 and 19,071.36 is: 28,607.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,662.20 : 107,494.20 = 19,071.36 : x
  2. Step 2: Convert to fraction form
    71,662.20/107,494.20 = 19,071.36/x
  3. Step 3: Cross multiply
    71,662.20x = 107,494.20 × 19,071.36
  4. Step 4: Simplify right side
    71,662.20x = 2,050,060,586.11
  5. Step 5: Solve for x
    x = 2,050,060,586.11/71,662.20
  6. Step 6: Final answer
    x = 28,607.28

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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.