Home / 90,889.56-136,341.63-31,723.92

Finding the Fourth Proportional to 90,889.56, 136,341.63 and 31,723.92

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Solution

The fourth proportional to 90,889.56, 136,341.63 and 31,723.92 is: 47,588.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,889.56 : 136,341.63 = 31,723.92 : x
  2. Step 2: Convert to fraction form
    90,889.56/136,341.63 = 31,723.92/x
  3. Step 3: Cross multiply
    90,889.56x = 136,341.63 × 31,723.92
  4. Step 4: Simplify right side
    90,889.56x = 4,325,290,962.79
  5. Step 5: Solve for x
    x = 4,325,290,962.79/90,889.56
  6. Step 6: Final answer
    x = 47,588.42

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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.