Home / 89,497.12-134,161.80-30,291.36

Finding the Fourth Proportional to 89,497.12, 134,161.80 and 30,291.36

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Solution

The fourth proportional to 89,497.12, 134,161.80 and 30,291.36 is: 45,408.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,497.12 : 134,161.80 = 30,291.36 : x
  2. Step 2: Convert to fraction form
    89,497.12/134,161.80 = 30,291.36/x
  3. Step 3: Cross multiply
    89,497.12x = 134,161.80 × 30,291.36
  4. Step 4: Simplify right side
    89,497.12x = 4,063,943,382.05
  5. Step 5: Solve for x
    x = 4,063,943,382.05/89,497.12
  6. Step 6: Final answer
    x = 45,408.65

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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.