Home / 80,900.18-111,590.14-53,675.68

Finding the Fourth Proportional to 80,900.18, 111,590.14 and 53,675.68

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Solution

The fourth proportional to 80,900.18, 111,590.14 and 53,675.68 is: 74,037.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,900.18 : 111,590.14 = 53,675.68 : x
  2. Step 2: Convert to fraction form
    80,900.18/111,590.14 = 53,675.68/x
  3. Step 3: Cross multiply
    80,900.18x = 111,590.14 × 53,675.68
  4. Step 4: Simplify right side
    80,900.18x = 5,989,675,819.47
  5. Step 5: Solve for x
    x = 5,989,675,819.47/80,900.18
  6. Step 6: Final answer
    x = 74,037.86

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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.