Home / 81,479.46-122,238.30-25,316.67

Finding the Fourth Proportional to 81,479.46, 122,238.30 and 25,316.67

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Solution

The fourth proportional to 81,479.46, 122,238.30 and 25,316.67 is: 37,980.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,479.46 : 122,238.30 = 25,316.67 : x
  2. Step 2: Convert to fraction form
    81,479.46/122,238.30 = 25,316.67/x
  3. Step 3: Cross multiply
    81,479.46x = 122,238.30 × 25,316.67
  4. Step 4: Simplify right side
    81,479.46x = 3,094,666,702.46
  5. Step 5: Solve for x
    x = 3,094,666,702.46/81,479.46
  6. Step 6: Final answer
    x = 37,980.94

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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.