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Finding the Fourth Proportional to 61,745.76, 85,209.12 and 33,451.20

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Solution

The fourth proportional to 61,745.76, 85,209.12 and 33,451.20 is: 46,162.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,745.76 : 85,209.12 = 33,451.20 : x
  2. Step 2: Convert to fraction form
    61,745.76/85,209.12 = 33,451.20/x
  3. Step 3: Cross multiply
    61,745.76x = 85,209.12 × 33,451.20
  4. Step 4: Simplify right side
    61,745.76x = 2,850,347,314.94
  5. Step 5: Solve for x
    x = 2,850,347,314.94/61,745.76
  6. Step 6: Final answer
    x = 46,162.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.