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Finding the Fourth Proportional to 61,230.20, 91,845.30 and 53,454.20

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Solution

The fourth proportional to 61,230.20, 91,845.30 and 53,454.20 is: 80,181.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,230.20 : 91,845.30 = 53,454.20 : x
  2. Step 2: Convert to fraction form
    61,230.20/91,845.30 = 53,454.20/x
  3. Step 3: Cross multiply
    61,230.20x = 91,845.30 × 53,454.20
  4. Step 4: Simplify right side
    61,230.20x = 4,909,517,035.26
  5. Step 5: Solve for x
    x = 4,909,517,035.26/61,230.20
  6. Step 6: Final answer
    x = 80,181.30

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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.