Home / 90,750.96-136,126.74-31,572.54

Finding the Fourth Proportional to 90,750.96, 136,126.74 and 31,572.54

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Solution

The fourth proportional to 90,750.96, 136,126.74 and 31,572.54 is: 47,358.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,750.96 : 136,126.74 = 31,572.54 : x
  2. Step 2: Convert to fraction form
    90,750.96/136,126.74 = 31,572.54/x
  3. Step 3: Cross multiply
    90,750.96x = 136,126.74 × 31,572.54
  4. Step 4: Simplify right side
    90,750.96x = 4,297,866,943.72
  5. Step 5: Solve for x
    x = 4,297,866,943.72/90,750.96
  6. Step 6: Final answer
    x = 47,358.91

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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.