Home / 71,178.03-106,765.69-21,258.27

Finding the Fourth Proportional to 71,178.03, 106,765.69 and 21,258.27

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Solution

The fourth proportional to 71,178.03, 106,765.69 and 21,258.27 is: 31,887.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,178.03 : 106,765.69 = 21,258.27 : x
  2. Step 2: Convert to fraction form
    71,178.03/106,765.69 = 21,258.27/x
  3. Step 3: Cross multiply
    71,178.03x = 106,765.69 × 21,258.27
  4. Step 4: Simplify right side
    71,178.03x = 2,269,653,864.76
  5. Step 5: Solve for x
    x = 2,269,653,864.76/71,178.03
  6. Step 6: Final answer
    x = 31,887.00

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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.