Home / 57,099.30-78,744.36-39,162.66

Finding the Fourth Proportional to 57,099.30, 78,744.36 and 39,162.66

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Solution

The fourth proportional to 57,099.30, 78,744.36 and 39,162.66 is: 54,008.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,099.30 : 78,744.36 = 39,162.66 : x
  2. Step 2: Convert to fraction form
    57,099.30/78,744.36 = 39,162.66/x
  3. Step 3: Cross multiply
    57,099.30x = 78,744.36 × 39,162.66
  4. Step 4: Simplify right side
    57,099.30x = 3,083,838,597.60
  5. Step 5: Solve for x
    x = 3,083,838,597.60/57,099.30
  6. Step 6: Final answer
    x = 54,008.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.