Home / 65,441.31-98,141.16-21,057.75

Finding the Fourth Proportional to 65,441.31, 98,141.16 and 21,057.75

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Solution

The fourth proportional to 65,441.31, 98,141.16 and 21,057.75 is: 31,579.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,441.31 : 98,141.16 = 21,057.75 : x
  2. Step 2: Convert to fraction form
    65,441.31/98,141.16 = 21,057.75/x
  3. Step 3: Cross multiply
    65,441.31x = 98,141.16 × 21,057.75
  4. Step 4: Simplify right side
    65,441.31x = 2,066,632,011.99
  5. Step 5: Solve for x
    x = 2,066,632,011.99/65,441.31
  6. Step 6: Final answer
    x = 31,579.93

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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.