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Finding the Fourth Proportional to 57,455.70, 86,124.11 and 21,907.46

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Solution

The fourth proportional to 57,455.70, 86,124.11 and 21,907.46 is: 32,838.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,455.70 : 86,124.11 = 21,907.46 : x
  2. Step 2: Convert to fraction form
    57,455.70/86,124.11 = 21,907.46/x
  3. Step 3: Cross multiply
    57,455.70x = 86,124.11 × 21,907.46
  4. Step 4: Simplify right side
    57,455.70x = 1,886,760,036.86
  5. Step 5: Solve for x
    x = 1,886,760,036.86/57,455.70
  6. Step 6: Final answer
    x = 32,838.52

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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.