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Finding the Fourth Proportional to 71,554.63, 107,339.30 and 18,964.12

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Solution

The fourth proportional to 71,554.63, 107,339.30 and 18,964.12 is: 28,448.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,554.63 : 107,339.30 = 18,964.12 : x
  2. Step 2: Convert to fraction form
    71,554.63/107,339.30 = 18,964.12/x
  3. Step 3: Cross multiply
    71,554.63x = 107,339.30 × 18,964.12
  4. Step 4: Simplify right side
    71,554.63x = 2,035,595,365.92
  5. Step 5: Solve for x
    x = 2,035,595,365.92/71,554.63
  6. Step 6: Final answer
    x = 28,448.13

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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.