Home / 84,764.58-127,158.03-31,449.30

Finding the Fourth Proportional to 84,764.58, 127,158.03 and 31,449.30

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Solution

The fourth proportional to 84,764.58, 127,158.03 and 31,449.30 is: 47,178.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,764.58 : 127,158.03 = 31,449.30 : x
  2. Step 2: Convert to fraction form
    84,764.58/127,158.03 = 31,449.30/x
  3. Step 3: Cross multiply
    84,764.58x = 127,158.03 × 31,449.30
  4. Step 4: Simplify right side
    84,764.58x = 3,999,031,032.88
  5. Step 5: Solve for x
    x = 3,999,031,032.88/84,764.58
  6. Step 6: Final answer
    x = 47,178.09

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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.