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Finding the Fourth Proportional to 89,875.98, 134,603.88 and 71,029.51

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Solution

The fourth proportional to 89,875.98, 134,603.88 and 71,029.51 is: 106,378.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,875.98 : 134,603.88 = 71,029.51 : x
  2. Step 2: Convert to fraction form
    89,875.98/134,603.88 = 71,029.51/x
  3. Step 3: Cross multiply
    89,875.98x = 134,603.88 × 71,029.51
  4. Step 4: Simplify right side
    89,875.98x = 9,560,847,037.63
  5. Step 5: Solve for x
    x = 9,560,847,037.63/89,875.98
  6. Step 6: Final answer
    x = 106,378.22

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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.