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Finding the Fourth Proportional to 57,465.40, 86,198.10 and 15,912.40

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Solution

The fourth proportional to 57,465.40, 86,198.10 and 15,912.40 is: 23,868.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,465.40 : 86,198.10 = 15,912.40 : x
  2. Step 2: Convert to fraction form
    57,465.40/86,198.10 = 15,912.40/x
  3. Step 3: Cross multiply
    57,465.40x = 86,198.10 × 15,912.40
  4. Step 4: Simplify right side
    57,465.40x = 1,371,618,646.44
  5. Step 5: Solve for x
    x = 1,371,618,646.44/57,465.40
  6. Step 6: Final answer
    x = 23,868.60

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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.