Home / 57,718.50-86,545.34-20,268.15

Finding the Fourth Proportional to 57,718.50, 86,545.34 and 20,268.15

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Solution

The fourth proportional to 57,718.50, 86,545.34 and 20,268.15 is: 30,390.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,718.50 : 86,545.34 = 20,268.15 : x
  2. Step 2: Convert to fraction form
    57,718.50/86,545.34 = 20,268.15/x
  3. Step 3: Cross multiply
    57,718.50x = 86,545.34 × 20,268.15
  4. Step 4: Simplify right side
    57,718.50x = 1,754,113,932.92
  5. Step 5: Solve for x
    x = 1,754,113,932.92/57,718.50
  6. Step 6: Final answer
    x = 30,390.84

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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.