Home / 77,072.24-115,610.73-20,912.13

Finding the Fourth Proportional to 77,072.24, 115,610.73 and 20,912.13

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Solution

The fourth proportional to 77,072.24, 115,610.73 and 20,912.13 is: 31,368.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,072.24 : 115,610.73 = 20,912.13 : x
  2. Step 2: Convert to fraction form
    77,072.24/115,610.73 = 20,912.13/x
  3. Step 3: Cross multiply
    77,072.24x = 115,610.73 × 20,912.13
  4. Step 4: Simplify right side
    77,072.24x = 2,417,666,615.15
  5. Step 5: Solve for x
    x = 2,417,666,615.15/77,072.24
  6. Step 6: Final answer
    x = 31,368.84

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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.