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Finding the Fourth Proportional to 52,787.60, 79,114.20 and 21,587.60

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Solution

The fourth proportional to 52,787.60, 79,114.20 and 21,587.60 is: 32,353.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,787.60 : 79,114.20 = 21,587.60 : x
  2. Step 2: Convert to fraction form
    52,787.60/79,114.20 = 21,587.60/x
  3. Step 3: Cross multiply
    52,787.60x = 79,114.20 × 21,587.60
  4. Step 4: Simplify right side
    52,787.60x = 1,707,885,703.92
  5. Step 5: Solve for x
    x = 1,707,885,703.92/52,787.60
  6. Step 6: Final answer
    x = 32,353.92

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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.