Home / 90,701.73-136,077.03-31,540.68

Finding the Fourth Proportional to 90,701.73, 136,077.03 and 31,540.68

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Solution

The fourth proportional to 90,701.73, 136,077.03 and 31,540.68 is: 47,319.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,701.73 : 136,077.03 = 31,540.68 : x
  2. Step 2: Convert to fraction form
    90,701.73/136,077.03 = 31,540.68/x
  3. Step 3: Cross multiply
    90,701.73x = 136,077.03 × 31,540.68
  4. Step 4: Simplify right side
    90,701.73x = 4,291,962,058.58
  5. Step 5: Solve for x
    x = 4,291,962,058.58/90,701.73
  6. Step 6: Final answer
    x = 47,319.52

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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.