Home / 81,715,315.03-122,609,074.38-42,844,473.70

Finding the Fourth Proportional to 81,715,315.03, 122,609,074.38 and 42,844,473.70

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Solution

The fourth proportional to 81,715,315.03, 122,609,074.38 and 42,844,473.70 is: 64,285,639.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,715,315.03 : 122,609,074.38 = 42,844,473.70 : x
  2. Step 2: Convert to fraction form
    81,715,315.03/122,609,074.38 = 42,844,473.70/x
  3. Step 3: Cross multiply
    81,715,315.03x = 122,609,074.38 × 42,844,473.70
  4. Step 4: Simplify right side
    81,715,315.03x = 5,253,121,262,655,254
  5. Step 5: Solve for x
    x = 5,253,121,262,655,254/81,715,315.03
  6. Step 6: Final answer
    x = 64,285,639.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.