Home / 84,771.58-127,153.39-31,474.17

Finding the Fourth Proportional to 84,771.58, 127,153.39 and 31,474.17

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Solution

The fourth proportional to 84,771.58, 127,153.39 and 31,474.17 is: 47,209.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,771.58 : 127,153.39 = 31,474.17 : x
  2. Step 2: Convert to fraction form
    84,771.58/127,153.39 = 31,474.17/x
  3. Step 3: Cross multiply
    84,771.58x = 127,153.39 × 31,474.17
  4. Step 4: Simplify right side
    84,771.58x = 4,002,046,619.80
  5. Step 5: Solve for x
    x = 4,002,046,619.80/84,771.58
  6. Step 6: Final answer
    x = 47,209.77

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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.