Home / 77,313.39-115,970.16-21,149.34

Finding the Fourth Proportional to 77,313.39, 115,970.16 and 21,149.34

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Solution

The fourth proportional to 77,313.39, 115,970.16 and 21,149.34 is: 31,724.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,313.39 : 115,970.16 = 21,149.34 : x
  2. Step 2: Convert to fraction form
    77,313.39/115,970.16 = 21,149.34/x
  3. Step 3: Cross multiply
    77,313.39x = 115,970.16 × 21,149.34
  4. Step 4: Simplify right side
    77,313.39x = 2,452,691,988.12
  5. Step 5: Solve for x
    x = 2,452,691,988.12/77,313.39
  6. Step 6: Final answer
    x = 31,724.03

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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.