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Finding the Fourth Proportional to 81,841.55, 112,924.39 and 47,843.46

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Solution

The fourth proportional to 81,841.55, 112,924.39 and 47,843.46 is: 66,014.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,841.55 : 112,924.39 = 47,843.46 : x
  2. Step 2: Convert to fraction form
    81,841.55/112,924.39 = 47,843.46/x
  3. Step 3: Cross multiply
    81,841.55x = 112,924.39 × 47,843.46
  4. Step 4: Simplify right side
    81,841.55x = 5,402,693,535.99
  5. Step 5: Solve for x
    x = 5,402,693,535.99/81,841.55
  6. Step 6: Final answer
    x = 66,014.07

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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.