Home / 81,495.38-122,219.35-31,564.35

Finding the Fourth Proportional to 81,495.38, 122,219.35 and 31,564.35

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Solution

The fourth proportional to 81,495.38, 122,219.35 and 31,564.35 is: 47,337.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,495.38 : 122,219.35 = 31,564.35 : x
  2. Step 2: Convert to fraction form
    81,495.38/122,219.35 = 31,564.35/x
  3. Step 3: Cross multiply
    81,495.38x = 122,219.35 × 31,564.35
  4. Step 4: Simplify right side
    81,495.38x = 3,857,774,261.26
  5. Step 5: Solve for x
    x = 3,857,774,261.26/81,495.38
  6. Step 6: Final answer
    x = 47,337.34

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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.