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Finding the Fourth Proportional to 108,015.71, 149,037.80 and 62,667.41

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Solution

The fourth proportional to 108,015.71, 149,037.80 and 62,667.41 is: 86,467.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,015.71 : 149,037.80 = 62,667.41 : x
  2. Step 2: Convert to fraction form
    108,015.71/149,037.80 = 62,667.41/x
  3. Step 3: Cross multiply
    108,015.71x = 149,037.80 × 62,667.41
  4. Step 4: Simplify right side
    108,015.71x = 9,339,811,859.57
  5. Step 5: Solve for x
    x = 9,339,811,859.57/108,015.71
  6. Step 6: Final answer
    x = 86,467.17

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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.