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Finding the Fourth Proportional to 59,380.80, 81,879.84 and 40,528.32

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Solution

The fourth proportional to 59,380.80, 81,879.84 and 40,528.32 is: 55,884.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,380.80 : 81,879.84 = 40,528.32 : x
  2. Step 2: Convert to fraction form
    59,380.80/81,879.84 = 40,528.32/x
  3. Step 3: Cross multiply
    59,380.80x = 81,879.84 × 40,528.32
  4. Step 4: Simplify right side
    59,380.80x = 3,318,452,357.07
  5. Step 5: Solve for x
    x = 3,318,452,357.07/59,380.80
  6. Step 6: Final answer
    x = 55,884.26

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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.