Home / 77,898.20-116,853.03-27,978.75

Finding the Fourth Proportional to 77,898.20, 116,853.03 and 27,978.75

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Solution

The fourth proportional to 77,898.20, 116,853.03 and 27,978.75 is: 41,970.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,898.20 : 116,853.03 = 27,978.75 : x
  2. Step 2: Convert to fraction form
    77,898.20/116,853.03 = 27,978.75/x
  3. Step 3: Cross multiply
    77,898.20x = 116,853.03 × 27,978.75
  4. Step 4: Simplify right side
    77,898.20x = 3,269,401,713.11
  5. Step 5: Solve for x
    x = 3,269,401,713.11/77,898.20
  6. Step 6: Final answer
    x = 41,970.19

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1.5x scale

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.