Home / 81,255.14-112,128.67-47,263.69

Finding the Fourth Proportional to 81,255.14, 112,128.67 and 47,263.69

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Solution

The fourth proportional to 81,255.14, 112,128.67 and 47,263.69 is: 65,221.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,255.14 : 112,128.67 = 47,263.69 : x
  2. Step 2: Convert to fraction form
    81,255.14/112,128.67 = 47,263.69/x
  3. Step 3: Cross multiply
    81,255.14x = 112,128.67 × 47,263.69
  4. Step 4: Simplify right side
    81,255.14x = 5,299,614,698.99
  5. Step 5: Solve for x
    x = 5,299,614,698.99/81,255.14
  6. Step 6: Final answer
    x = 65,221.90

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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.