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Finding the Fourth Proportional to 52,989.72, 79,467.03 and 21,391.62

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Solution

The fourth proportional to 52,989.72, 79,467.03 and 21,391.62 is: 32,080.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,989.72 : 79,467.03 = 21,391.62 : x
  2. Step 2: Convert to fraction form
    52,989.72/79,467.03 = 21,391.62/x
  3. Step 3: Cross multiply
    52,989.72x = 79,467.03 × 21,391.62
  4. Step 4: Simplify right side
    52,989.72x = 1,699,928,508.29
  5. Step 5: Solve for x
    x = 1,699,928,508.29/52,989.72
  6. Step 6: Final answer
    x = 32,080.35

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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.