Home / 90,935.19-136,341.09-31,738.50

Finding the Fourth Proportional to 90,935.19, 136,341.09 and 31,738.50

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Solution

The fourth proportional to 90,935.19, 136,341.09 and 31,738.50 is: 47,586.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,935.19 : 136,341.09 = 31,738.50 : x
  2. Step 2: Convert to fraction form
    90,935.19/136,341.09 = 31,738.50/x
  3. Step 3: Cross multiply
    90,935.19x = 136,341.09 × 31,738.50
  4. Step 4: Simplify right side
    90,935.19x = 4,327,261,684.97
  5. Step 5: Solve for x
    x = 4,327,261,684.97/90,935.19
  6. Step 6: Final answer
    x = 47,586.22

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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.