Home / 77,211.72-115,750.56-30,453.12

Finding the Fourth Proportional to 77,211.72, 115,750.56 and 30,453.12

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Solution

The fourth proportional to 77,211.72, 115,750.56 and 30,453.12 is: 45,653.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,211.72 : 115,750.56 = 30,453.12 : x
  2. Step 2: Convert to fraction form
    77,211.72/115,750.56 = 30,453.12/x
  3. Step 3: Cross multiply
    77,211.72x = 115,750.56 × 30,453.12
  4. Step 4: Simplify right side
    77,211.72x = 3,524,965,693.75
  5. Step 5: Solve for x
    x = 3,524,965,693.75/77,211.72
  6. Step 6: Final answer
    x = 45,653.25

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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.