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Finding the Fourth Proportional to 44,403.90, 66,573.06 and 21,003

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Solution

The fourth proportional to 44,403.90, 66,573.06 and 21,003 is: 31,488.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,403.90 : 66,573.06 = 21,003 : x
  2. Step 2: Convert to fraction form
    44,403.90/66,573.06 = 21,003/x
  3. Step 3: Cross multiply
    44,403.90x = 66,573.06 × 21,003
  4. Step 4: Simplify right side
    44,403.90x = 1,398,233,979.18
  5. Step 5: Solve for x
    x = 1,398,233,979.18/44,403.90
  6. Step 6: Final answer
    x = 31,488.99

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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.