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Finding the Fourth Proportional to 57,380.90, 86,071.42 and 17,938.22

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Solution

The fourth proportional to 57,380.90, 86,071.42 and 17,938.22 is: 26,907.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,380.90 : 86,071.42 = 17,938.22 : x
  2. Step 2: Convert to fraction form
    57,380.90/86,071.42 = 17,938.22/x
  3. Step 3: Cross multiply
    57,380.90x = 86,071.42 × 17,938.22
  4. Step 4: Simplify right side
    57,380.90x = 1,543,968,067.67
  5. Step 5: Solve for x
    x = 1,543,968,067.67/57,380.90
  6. Step 6: Final answer
    x = 26,907.35

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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.