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Finding the Fourth Proportional to 74,881.38, 112,321.86 and 30,497.70

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Solution

The fourth proportional to 74,881.38, 112,321.86 and 30,497.70 is: 45,746.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,881.38 : 112,321.86 = 30,497.70 : x
  2. Step 2: Convert to fraction form
    74,881.38/112,321.86 = 30,497.70/x
  3. Step 3: Cross multiply
    74,881.38x = 112,321.86 × 30,497.70
  4. Step 4: Simplify right side
    74,881.38x = 3,425,558,389.72
  5. Step 5: Solve for x
    x = 3,425,558,389.72/74,881.38
  6. Step 6: Final answer
    x = 45,746.46

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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.