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Finding the Fourth Proportional to 56,600.40, 84,939.46 and 19,664.40

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Solution

The fourth proportional to 56,600.40, 84,939.46 and 19,664.40 is: 29,510.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,600.40 : 84,939.46 = 19,664.40 : x
  2. Step 2: Convert to fraction form
    56,600.40/84,939.46 = 19,664.40/x
  3. Step 3: Cross multiply
    56,600.40x = 84,939.46 × 19,664.40
  4. Step 4: Simplify right side
    56,600.40x = 1,670,283,517.22
  5. Step 5: Solve for x
    x = 1,670,283,517.22/56,600.40
  6. Step 6: Final answer
    x = 29,510.10

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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.