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Finding the Fourth Proportional to 108,020.21, 149,044.01 and 62,671.91

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Solution

The fourth proportional to 108,020.21, 149,044.01 and 62,671.91 is: 86,473.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,020.21 : 149,044.01 = 62,671.91 : x
  2. Step 2: Convert to fraction form
    108,020.21/149,044.01 = 62,671.91/x
  3. Step 3: Cross multiply
    108,020.21x = 149,044.01 × 62,671.91
  4. Step 4: Simplify right side
    108,020.21x = 9,340,871,722.18
  5. Step 5: Solve for x
    x = 9,340,871,722.18/108,020.21
  6. Step 6: Final answer
    x = 86,473.38

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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.