Home / 77,975.11-116,945.42-21,800.11

Finding the Fourth Proportional to 77,975.11, 116,945.42 and 21,800.11

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Solution

The fourth proportional to 77,975.11, 116,945.42 and 21,800.11 is: 32,695.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,975.11 : 116,945.42 = 21,800.11 : x
  2. Step 2: Convert to fraction form
    77,975.11/116,945.42 = 21,800.11/x
  3. Step 3: Cross multiply
    77,975.11x = 116,945.42 × 21,800.11
  4. Step 4: Simplify right side
    77,975.11x = 2,549,423,020.00
  5. Step 5: Solve for x
    x = 2,549,423,020.00/77,975.11
  6. Step 6: Final answer
    x = 32,695.34

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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.