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Finding the Fourth Proportional to 40,285.80, 60,428.70 and 29,788.20

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Solution

The fourth proportional to 40,285.80, 60,428.70 and 29,788.20 is: 44,682.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,285.80 : 60,428.70 = 29,788.20 : x
  2. Step 2: Convert to fraction form
    40,285.80/60,428.70 = 29,788.20/x
  3. Step 3: Cross multiply
    40,285.80x = 60,428.70 × 29,788.20
  4. Step 4: Simplify right side
    40,285.80x = 1,800,062,201.34
  5. Step 5: Solve for x
    x = 1,800,062,201.34/40,285.80
  6. Step 6: Final answer
    x = 44,682.30

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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.