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Finding the Fourth Proportional to 56,721, 85,061.63 and 16,729.37

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Solution

The fourth proportional to 56,721, 85,061.63 and 16,729.37 is: 25,088.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,721 : 85,061.63 = 16,729.37 : x
  2. Step 2: Convert to fraction form
    56,721/85,061.63 = 16,729.37/x
  3. Step 3: Cross multiply
    56,721x = 85,061.63 × 16,729.37
  4. Step 4: Simplify right side
    56,721x = 1,423,026,972.12
  5. Step 5: Solve for x
    x = 1,423,026,972.12/56,721
  6. Step 6: Final answer
    x = 25,088.19

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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.