Home / 91,023.96-136,531.68-31,872.88

Finding the Fourth Proportional to 91,023.96, 136,531.68 and 31,872.88

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Solution

The fourth proportional to 91,023.96, 136,531.68 and 31,872.88 is: 47,807.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,023.96 : 136,531.68 = 31,872.88 : x
  2. Step 2: Convert to fraction form
    91,023.96/136,531.68 = 31,872.88/x
  3. Step 3: Cross multiply
    91,023.96x = 136,531.68 × 31,872.88
  4. Step 4: Simplify right side
    91,023.96x = 4,351,657,852.84
  5. Step 5: Solve for x
    x = 4,351,657,852.84/91,023.96
  6. Step 6: Final answer
    x = 47,807.83

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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.