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Finding the Fourth Proportional to 57,420.52, 86,135.70 and 15,867.52

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Solution

The fourth proportional to 57,420.52, 86,135.70 and 15,867.52 is: 23,802.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,420.52 : 86,135.70 = 15,867.52 : x
  2. Step 2: Convert to fraction form
    57,420.52/86,135.70 = 15,867.52/x
  3. Step 3: Cross multiply
    57,420.52x = 86,135.70 × 15,867.52
  4. Step 4: Simplify right side
    57,420.52x = 1,366,759,942.46
  5. Step 5: Solve for x
    x = 1,366,759,942.46/57,420.52
  6. Step 6: Final answer
    x = 23,802.64

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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.