Home / 81,760.05-112,809.16-47,749.23

Finding the Fourth Proportional to 81,760.05, 112,809.16 and 47,749.23

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Solution

The fourth proportional to 81,760.05, 112,809.16 and 47,749.23 is: 65,882.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,760.05 : 112,809.16 = 47,749.23 : x
  2. Step 2: Convert to fraction form
    81,760.05/112,809.16 = 47,749.23/x
  3. Step 3: Cross multiply
    81,760.05x = 112,809.16 × 47,749.23
  4. Step 4: Simplify right side
    81,760.05x = 5,386,549,843.53
  5. Step 5: Solve for x
    x = 5,386,549,843.53/81,760.05
  6. Step 6: Final answer
    x = 65,882.42

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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.