Home / 81,000.72-111,746.52-50,765.40

Finding the Fourth Proportional to 81,000.72, 111,746.52 and 50,765.40

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Solution

The fourth proportional to 81,000.72, 111,746.52 and 50,765.40 is: 70,034.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,000.72 : 111,746.52 = 50,765.40 : x
  2. Step 2: Convert to fraction form
    81,000.72/111,746.52 = 50,765.40/x
  3. Step 3: Cross multiply
    81,000.72x = 111,746.52 × 50,765.40
  4. Step 4: Simplify right side
    81,000.72x = 5,672,856,786.41
  5. Step 5: Solve for x
    x = 5,672,856,786.41/81,000.72
  6. Step 6: Final answer
    x = 70,034.65

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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.