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Finding the Fourth Proportional to 96,940.80, 145,418.40 and 34,603.20

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Solution

The fourth proportional to 96,940.80, 145,418.40 and 34,603.20 is: 51,907.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,940.80 : 145,418.40 = 34,603.20 : x
  2. Step 2: Convert to fraction form
    96,940.80/145,418.40 = 34,603.20/x
  3. Step 3: Cross multiply
    96,940.80x = 145,418.40 × 34,603.20
  4. Step 4: Simplify right side
    96,940.80x = 5,031,941,978.88
  5. Step 5: Solve for x
    x = 5,031,941,978.88/96,940.80
  6. Step 6: Final answer
    x = 51,907.37

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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.