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Finding the Fourth Proportional to 53,052.72, 79,579.80 and 21,477.84

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Solution

The fourth proportional to 53,052.72, 79,579.80 and 21,477.84 is: 32,217.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,052.72 : 79,579.80 = 21,477.84 : x
  2. Step 2: Convert to fraction form
    53,052.72/79,579.80 = 21,477.84/x
  3. Step 3: Cross multiply
    53,052.72x = 79,579.80 × 21,477.84
  4. Step 4: Simplify right side
    53,052.72x = 1,709,202,211.63
  5. Step 5: Solve for x
    x = 1,709,202,211.63/53,052.72
  6. Step 6: Final answer
    x = 32,217.05

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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.