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Finding the Fourth Proportional to 61,879.26, 85,415.50 and 36,728.76

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Solution

The fourth proportional to 61,879.26, 85,415.50 and 36,728.76 is: 50,698.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,879.26 : 85,415.50 = 36,728.76 : x
  2. Step 2: Convert to fraction form
    61,879.26/85,415.50 = 36,728.76/x
  3. Step 3: Cross multiply
    61,879.26x = 85,415.50 × 36,728.76
  4. Step 4: Simplify right side
    61,879.26x = 3,137,205,399.78
  5. Step 5: Solve for x
    x = 3,137,205,399.78/61,879.26
  6. Step 6: Final answer
    x = 50,698.82

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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.