Home / 99,712.32-137,604.59-54,390.29

Finding the Fourth Proportional to 99,712.32, 137,604.59 and 54,390.29

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Solution

The fourth proportional to 99,712.32, 137,604.59 and 54,390.29 is: 75,059.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,712.32 : 137,604.59 = 54,390.29 : x
  2. Step 2: Convert to fraction form
    99,712.32/137,604.59 = 54,390.29/x
  3. Step 3: Cross multiply
    99,712.32x = 137,604.59 × 54,390.29
  4. Step 4: Simplify right side
    99,712.32x = 7,484,352,799.42
  5. Step 5: Solve for x
    x = 7,484,352,799.42/99,712.32
  6. Step 6: Final answer
    x = 75,059.46

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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.