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Finding the Fourth Proportional to 45,487.67, 68,203.71 and 21,802.46

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Solution

The fourth proportional to 45,487.67, 68,203.71 and 21,802.46 is: 32,690.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,487.67 : 68,203.71 = 21,802.46 : x
  2. Step 2: Convert to fraction form
    45,487.67/68,203.71 = 21,802.46/x
  3. Step 3: Cross multiply
    45,487.67x = 68,203.71 × 21,802.46
  4. Step 4: Simplify right side
    45,487.67x = 1,487,008,479.27
  5. Step 5: Solve for x
    x = 1,487,008,479.27/45,487.67
  6. Step 6: Final answer
    x = 32,690.37

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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.