Home / 77,214.78-115,823.39-30,467.25

Finding the Fourth Proportional to 77,214.78, 115,823.39 and 30,467.25

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Solution

The fourth proportional to 77,214.78, 115,823.39 and 30,467.25 is: 45,701.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,214.78 : 115,823.39 = 30,467.25 : x
  2. Step 2: Convert to fraction form
    77,214.78/115,823.39 = 30,467.25/x
  3. Step 3: Cross multiply
    77,214.78x = 115,823.39 × 30,467.25
  4. Step 4: Simplify right side
    77,214.78x = 3,528,820,178.98
  5. Step 5: Solve for x
    x = 3,528,820,178.98/77,214.78
  6. Step 6: Final answer
    x = 45,701.36

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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.