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Finding the Fourth Proportional to 45,392.69, 68,050.76 and 21,686.82

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Solution

The fourth proportional to 45,392.69, 68,050.76 and 21,686.82 is: 32,511.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,392.69 : 68,050.76 = 21,686.82 : x
  2. Step 2: Convert to fraction form
    45,392.69/68,050.76 = 21,686.82/x
  3. Step 3: Cross multiply
    45,392.69x = 68,050.76 × 21,686.82
  4. Step 4: Simplify right side
    45,392.69x = 1,475,804,474.55
  5. Step 5: Solve for x
    x = 1,475,804,474.55/45,392.69
  6. Step 6: Final answer
    x = 32,511.94

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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.