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Finding the Fourth Proportional to 56,881.44, 85,310.64 and 15,318.72

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Solution

The fourth proportional to 56,881.44, 85,310.64 and 15,318.72 is: 22,974.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,881.44 : 85,310.64 = 15,318.72 : x
  2. Step 2: Convert to fraction form
    56,881.44/85,310.64 = 15,318.72/x
  3. Step 3: Cross multiply
    56,881.44x = 85,310.64 × 15,318.72
  4. Step 4: Simplify right side
    56,881.44x = 1,306,849,807.18
  5. Step 5: Solve for x
    x = 1,306,849,807.18/56,881.44
  6. Step 6: Final answer
    x = 22,974.98

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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.