Home / 90,876.86-136,305.57-31,713.65

Finding the Fourth Proportional to 90,876.86, 136,305.57 and 31,713.65

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Solution

The fourth proportional to 90,876.86, 136,305.57 and 31,713.65 is: 47,567.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,876.86 : 136,305.57 = 31,713.65 : x
  2. Step 2: Convert to fraction form
    90,876.86/136,305.57 = 31,713.65/x
  3. Step 3: Cross multiply
    90,876.86x = 136,305.57 × 31,713.65
  4. Step 4: Simplify right side
    90,876.86x = 4,322,747,140.03
  5. Step 5: Solve for x
    x = 4,322,747,140.03/90,876.86
  6. Step 6: Final answer
    x = 47,567.08

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1.5x scale

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.