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Finding the Fourth Proportional to 48,103.84, 66,360.72 and 31,330.72

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Solution

The fourth proportional to 48,103.84, 66,360.72 and 31,330.72 is: 43,221.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,103.84 : 66,360.72 = 31,330.72 : x
  2. Step 2: Convert to fraction form
    48,103.84/66,360.72 = 31,330.72/x
  3. Step 3: Cross multiply
    48,103.84x = 66,360.72 × 31,330.72
  4. Step 4: Simplify right side
    48,103.84x = 2,079,129,137.32
  5. Step 5: Solve for x
    x = 2,079,129,137.32/48,103.84
  6. Step 6: Final answer
    x = 43,221.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.