Home / 84,127.14-126,153.81-31,499.73

Finding the Fourth Proportional to 84,127.14, 126,153.81 and 31,499.73

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Solution

The fourth proportional to 84,127.14, 126,153.81 and 31,499.73 is: 47,235.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,127.14 : 126,153.81 = 31,499.73 : x
  2. Step 2: Convert to fraction form
    84,127.14/126,153.81 = 31,499.73/x
  3. Step 3: Cross multiply
    84,127.14x = 126,153.81 × 31,499.73
  4. Step 4: Simplify right side
    84,127.14x = 3,973,810,953.47
  5. Step 5: Solve for x
    x = 3,973,810,953.47/84,127.14
  6. Step 6: Final answer
    x = 47,235.78

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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.