Home / 81,837.05-112,918.19-47,838.96

Finding the Fourth Proportional to 81,837.05, 112,918.19 and 47,838.96

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Solution

The fourth proportional to 81,837.05, 112,918.19 and 47,838.96 is: 66,007.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,837.05 : 112,918.19 = 47,838.96 : x
  2. Step 2: Convert to fraction form
    81,837.05/112,918.19 = 47,838.96/x
  3. Step 3: Cross multiply
    81,837.05x = 112,918.19 × 47,838.96
  4. Step 4: Simplify right side
    81,837.05x = 5,401,888,535.49
  5. Step 5: Solve for x
    x = 5,401,888,535.49/81,837.05
  6. Step 6: Final answer
    x = 66,007.86

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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.