Home / 71,403.13-107,100.37-18,812.53

Finding the Fourth Proportional to 71,403.13, 107,100.37 and 18,812.53

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Solution

The fourth proportional to 71,403.13, 107,100.37 and 18,812.53 is: 28,217.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,403.13 : 107,100.37 = 18,812.53 : x
  2. Step 2: Convert to fraction form
    71,403.13/107,100.37 = 18,812.53/x
  3. Step 3: Cross multiply
    71,403.13x = 107,100.37 × 18,812.53
  4. Step 4: Simplify right side
    71,403.13x = 2,014,828,923.64
  5. Step 5: Solve for x
    x = 2,014,828,923.64/71,403.13
  6. Step 6: Final answer
    x = 28,217.66

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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.