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Finding the Fourth Proportional to 56,863.21, 85,368.72 and 43,724.81

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Solution

The fourth proportional to 56,863.21, 85,368.72 and 43,724.81 is: 65,644.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,863.21 : 85,368.72 = 43,724.81 : x
  2. Step 2: Convert to fraction form
    56,863.21/85,368.72 = 43,724.81/x
  3. Step 3: Cross multiply
    56,863.21x = 85,368.72 × 43,724.81
  4. Step 4: Simplify right side
    56,863.21x = 3,732,730,799.07
  5. Step 5: Solve for x
    x = 3,732,730,799.07/56,863.21
  6. Step 6: Final answer
    x = 65,644.04

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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.