Home / 91,295.12-136,934.98-31,318.67

Finding the Fourth Proportional to 91,295.12, 136,934.98 and 31,318.67

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Solution

The fourth proportional to 91,295.12, 136,934.98 and 31,318.67 is: 46,975.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,295.12 : 136,934.98 = 31,318.67 : x
  2. Step 2: Convert to fraction form
    91,295.12/136,934.98 = 31,318.67/x
  3. Step 3: Cross multiply
    91,295.12x = 136,934.98 × 31,318.67
  4. Step 4: Simplify right side
    91,295.12x = 4,288,621,714.12
  5. Step 5: Solve for x
    x = 4,288,621,714.12/91,295.12
  6. Step 6: Final answer
    x = 46,975.37

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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.