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Finding the Fourth Proportional to 60,021, 90,032.72 and 18,468

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Solution

The fourth proportional to 60,021, 90,032.72 and 18,468 is: 27,702.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,021 : 90,032.72 = 18,468 : x
  2. Step 2: Convert to fraction form
    60,021/90,032.72 = 18,468/x
  3. Step 3: Cross multiply
    60,021x = 90,032.72 × 18,468
  4. Step 4: Simplify right side
    60,021x = 1,662,724,180.62
  5. Step 5: Solve for x
    x = 1,662,724,180.62/60,021
  6. Step 6: Final answer
    x = 27,702.37

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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.