Home / 77,215.28-115,824.14-30,467.75

Finding the Fourth Proportional to 77,215.28, 115,824.14 and 30,467.75

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Solution

The fourth proportional to 77,215.28, 115,824.14 and 30,467.75 is: 45,702.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,215.28 : 115,824.14 = 30,467.75 : x
  2. Step 2: Convert to fraction form
    77,215.28/115,824.14 = 30,467.75/x
  3. Step 3: Cross multiply
    77,215.28x = 115,824.14 × 30,467.75
  4. Step 4: Simplify right side
    77,215.28x = 3,528,900,941.49
  5. Step 5: Solve for x
    x = 3,528,900,941.49/77,215.28
  6. Step 6: Final answer
    x = 45,702.11

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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.