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Finding the Fourth Proportional to 81,574.62, 112,593.67 and 55,743.63

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Solution

The fourth proportional to 81,574.62, 112,593.67 and 55,743.63 is: 76,940.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,574.62 : 112,593.67 = 55,743.63 : x
  2. Step 2: Convert to fraction form
    81,574.62/112,593.67 = 55,743.63/x
  3. Step 3: Cross multiply
    81,574.62x = 112,593.67 × 55,743.63
  4. Step 4: Simplify right side
    81,574.62x = 6,276,379,039.14
  5. Step 5: Solve for x
    x = 6,276,379,039.14/81,574.62
  6. Step 6: Final answer
    x = 76,940.35

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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.