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Finding the Fourth Proportional to 53,105.80, 79,658.70 and 52,328.20

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Solution

The fourth proportional to 53,105.80, 79,658.70 and 52,328.20 is: 78,492.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,105.80 : 79,658.70 = 52,328.20 : x
  2. Step 2: Convert to fraction form
    53,105.80/79,658.70 = 52,328.20/x
  3. Step 3: Cross multiply
    53,105.80x = 79,658.70 × 52,328.20
  4. Step 4: Simplify right side
    53,105.80x = 4,168,396,385.34
  5. Step 5: Solve for x
    x = 4,168,396,385.34/53,105.80
  6. Step 6: Final answer
    x = 78,492.30

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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.