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Finding the Fourth Proportional to 99,671.09, 137,541.02 and 54,348.70

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Solution

The fourth proportional to 99,671.09, 137,541.02 and 54,348.70 is: 74,998.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,671.09 : 137,541.02 = 54,348.70 : x
  2. Step 2: Convert to fraction form
    99,671.09/137,541.02 = 54,348.70/x
  3. Step 3: Cross multiply
    99,671.09x = 137,541.02 × 54,348.70
  4. Step 4: Simplify right side
    99,671.09x = 7,475,175,425.69
  5. Step 5: Solve for x
    x = 7,475,175,425.69/99,671.09
  6. Step 6: Final answer
    x = 74,998.44

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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.