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Finding the Fourth Proportional to 52,073.22, 78,109.76 and 12,630.30

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Solution

The fourth proportional to 52,073.22, 78,109.76 and 12,630.30 is: 18,945.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,073.22 : 78,109.76 = 12,630.30 : x
  2. Step 2: Convert to fraction form
    52,073.22/78,109.76 = 12,630.30/x
  3. Step 3: Cross multiply
    52,073.22x = 78,109.76 × 12,630.30
  4. Step 4: Simplify right side
    52,073.22x = 986,549,701.73
  5. Step 5: Solve for x
    x = 986,549,701.73/52,073.22
  6. Step 6: Final answer
    x = 18,945.43

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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.