Home / 71,258.23-106,890.78-18,667.76

Finding the Fourth Proportional to 71,258.23, 106,890.78 and 18,667.76

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Solution

The fourth proportional to 71,258.23, 106,890.78 and 18,667.76 is: 28,002.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,258.23 : 106,890.78 = 18,667.76 : x
  2. Step 2: Convert to fraction form
    71,258.23/106,890.78 = 18,667.76/x
  3. Step 3: Cross multiply
    71,258.23x = 106,890.78 × 18,667.76
  4. Step 4: Simplify right side
    71,258.23x = 1,995,411,427.25
  5. Step 5: Solve for x
    x = 1,995,411,427.25/71,258.23
  6. Step 6: Final answer
    x = 28,002.54

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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.