Home / 91,251.39-136,872.96-31,285.20

Finding the Fourth Proportional to 91,251.39, 136,872.96 and 31,285.20

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Solution

The fourth proportional to 91,251.39, 136,872.96 and 31,285.20 is: 46,926.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,251.39 : 136,872.96 = 31,285.20 : x
  2. Step 2: Convert to fraction form
    91,251.39/136,872.96 = 31,285.20/x
  3. Step 3: Cross multiply
    91,251.39x = 136,872.96 × 31,285.20
  4. Step 4: Simplify right side
    91,251.39x = 4,282,097,928.19
  5. Step 5: Solve for x
    x = 4,282,097,928.19/91,251.39
  6. Step 6: Final answer
    x = 46,926.39

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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.