Home / 90,764.75-136,165.57-31,605.03

Finding the Fourth Proportional to 90,764.75, 136,165.57 and 31,605.03

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Solution

The fourth proportional to 90,764.75, 136,165.57 and 31,605.03 is: 47,413.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,764.75 : 136,165.57 = 31,605.03 : x
  2. Step 2: Convert to fraction form
    90,764.75/136,165.57 = 31,605.03/x
  3. Step 3: Cross multiply
    90,764.75x = 136,165.57 × 31,605.03
  4. Step 4: Simplify right side
    90,764.75x = 4,303,516,924.82
  5. Step 5: Solve for x
    x = 4,303,516,924.82/90,764.75
  6. Step 6: Final answer
    x = 47,413.97

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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.