Home / 90,741.40-136,112.10-62,747.80

Finding the Fourth Proportional to 90,741.40, 136,112.10 and 62,747.80

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Solution

The fourth proportional to 90,741.40, 136,112.10 and 62,747.80 is: 94,121.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,741.40 : 136,112.10 = 62,747.80 : x
  2. Step 2: Convert to fraction form
    90,741.40/136,112.10 = 62,747.80/x
  3. Step 3: Cross multiply
    90,741.40x = 136,112.10 × 62,747.80
  4. Step 4: Simplify right side
    90,741.40x = 8,540,734,828.38
  5. Step 5: Solve for x
    x = 8,540,734,828.38/90,741.40
  6. Step 6: Final answer
    x = 94,121.70

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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.