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Finding the Fourth Proportional to 57,015.72, 85,543.95 and 25,422.95

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Solution

The fourth proportional to 57,015.72, 85,543.95 and 25,422.95 is: 38,143.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,015.72 : 85,543.95 = 25,422.95 : x
  2. Step 2: Convert to fraction form
    57,015.72/85,543.95 = 25,422.95/x
  3. Step 3: Cross multiply
    57,015.72x = 85,543.95 × 25,422.95
  4. Step 4: Simplify right side
    57,015.72x = 2,174,779,777.51
  5. Step 5: Solve for x
    x = 2,174,779,777.51/57,015.72
  6. Step 6: Final answer
    x = 38,143.51

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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.