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Finding the Fourth Proportional to 61,185.20, 91,777.80 and 45,633.20

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Solution

The fourth proportional to 61,185.20, 91,777.80 and 45,633.20 is: 68,449.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,185.20 : 91,777.80 = 45,633.20 : x
  2. Step 2: Convert to fraction form
    61,185.20/91,777.80 = 45,633.20/x
  3. Step 3: Cross multiply
    61,185.20x = 91,777.80 × 45,633.20
  4. Step 4: Simplify right side
    61,185.20x = 4,188,114,702.96
  5. Step 5: Solve for x
    x = 4,188,114,702.96/61,185.20
  6. Step 6: Final answer
    x = 68,449.80

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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.