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Finding the Fourth Proportional to 80,643.70, 111,285.84 and 44,345.08

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Solution

The fourth proportional to 80,643.70, 111,285.84 and 44,345.08 is: 61,194.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,643.70 : 111,285.84 = 44,345.08 : x
  2. Step 2: Convert to fraction form
    80,643.70/111,285.84 = 44,345.08/x
  3. Step 3: Cross multiply
    80,643.70x = 111,285.84 × 44,345.08
  4. Step 4: Simplify right side
    80,643.70x = 4,934,979,477.67
  5. Step 5: Solve for x
    x = 4,934,979,477.67/80,643.70
  6. Step 6: Final answer
    x = 61,194.85

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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.