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Finding the Fourth Proportional to 57,126.78, 85,689.27 and 15,573.78

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Solution

The fourth proportional to 57,126.78, 85,689.27 and 15,573.78 is: 23,360.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,126.78 : 85,689.27 = 15,573.78 : x
  2. Step 2: Convert to fraction form
    57,126.78/85,689.27 = 15,573.78/x
  3. Step 3: Cross multiply
    57,126.78x = 85,689.27 × 15,573.78
  4. Step 4: Simplify right side
    57,126.78x = 1,334,505,839.34
  5. Step 5: Solve for x
    x = 1,334,505,839.34/57,126.78
  6. Step 6: Final answer
    x = 23,360.42

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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.