Home / 90,853.32-136,241.10-31,671.48

Finding the Fourth Proportional to 90,853.32, 136,241.10 and 31,671.48

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Solution

The fourth proportional to 90,853.32, 136,241.10 and 31,671.48 is: 47,493.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,853.32 : 136,241.10 = 31,671.48 : x
  2. Step 2: Convert to fraction form
    90,853.32/136,241.10 = 31,671.48/x
  3. Step 3: Cross multiply
    90,853.32x = 136,241.10 × 31,671.48
  4. Step 4: Simplify right side
    90,853.32x = 4,314,957,273.83
  5. Step 5: Solve for x
    x = 4,314,957,273.83/90,853.32
  6. Step 6: Final answer
    x = 47,493.67

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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.