Home / 99,705.92-137,594.24-57,267.20

Finding the Fourth Proportional to 99,705.92, 137,594.24 and 57,267.20

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Solution

The fourth proportional to 99,705.92, 137,594.24 and 57,267.20 is: 79,028.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,705.92 : 137,594.24 = 57,267.20 : x
  2. Step 2: Convert to fraction form
    99,705.92/137,594.24 = 57,267.20/x
  3. Step 3: Cross multiply
    99,705.92x = 137,594.24 × 57,267.20
  4. Step 4: Simplify right side
    99,705.92x = 7,879,636,860.93
  5. Step 5: Solve for x
    x = 7,879,636,860.93/99,705.92
  6. Step 6: Final answer
    x = 79,028.78

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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.