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Finding the Fourth Proportional to 89,980.33, 135,052.35 and 47,895.79

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Solution

The fourth proportional to 89,980.33, 135,052.35 and 47,895.79 is: 71,887.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,980.33 : 135,052.35 = 47,895.79 : x
  2. Step 2: Convert to fraction form
    89,980.33/135,052.35 = 47,895.79/x
  3. Step 3: Cross multiply
    89,980.33x = 135,052.35 × 47,895.79
  4. Step 4: Simplify right side
    89,980.33x = 6,468,438,994.61
  5. Step 5: Solve for x
    x = 6,468,438,994.61/89,980.33
  6. Step 6: Final answer
    x = 71,887.26

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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.