Home / 57,439.10-86,159.07-19,999.11

Finding the Fourth Proportional to 57,439.10, 86,159.07 and 19,999.11

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Solution

The fourth proportional to 57,439.10, 86,159.07 and 19,999.11 is: 29,998.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,439.10 : 86,159.07 = 19,999.11 : x
  2. Step 2: Convert to fraction form
    57,439.10/86,159.07 = 19,999.11/x
  3. Step 3: Cross multiply
    57,439.10x = 86,159.07 × 19,999.11
  4. Step 4: Simplify right side
    57,439.10x = 1,723,104,608.67
  5. Step 5: Solve for x
    x = 1,723,104,608.67/57,439.10
  6. Step 6: Final answer
    x = 29,998.81

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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.