Home / 90,751.29-136,141.46-31,603.77

Finding the Fourth Proportional to 90,751.29, 136,141.46 and 31,603.77

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Solution

The fourth proportional to 90,751.29, 136,141.46 and 31,603.77 is: 47,410.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,751.29 : 136,141.46 = 31,603.77 : x
  2. Step 2: Convert to fraction form
    90,751.29/136,141.46 = 31,603.77/x
  3. Step 3: Cross multiply
    90,751.29x = 136,141.46 × 31,603.77
  4. Step 4: Simplify right side
    90,751.29x = 4,302,583,231.29
  5. Step 5: Solve for x
    x = 4,302,583,231.29/90,751.29
  6. Step 6: Final answer
    x = 47,410.71

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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.