Home / 86,313.32-129,428.22-51,243.56

Finding the Fourth Proportional to 86,313.32, 129,428.22 and 51,243.56

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Solution

The fourth proportional to 86,313.32, 129,428.22 and 51,243.56 is: 76,840.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,313.32 : 129,428.22 = 51,243.56 : x
  2. Step 2: Convert to fraction form
    86,313.32/129,428.22 = 51,243.56/x
  3. Step 3: Cross multiply
    86,313.32x = 129,428.22 × 51,243.56
  4. Step 4: Simplify right side
    86,313.32x = 6,632,362,757.26
  5. Step 5: Solve for x
    x = 6,632,362,757.26/86,313.32
  6. Step 6: Final answer
    x = 76,840.55

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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.