Home / 78,782.38-118,107.52-34,375.36

Finding the Fourth Proportional to 78,782.38, 118,107.52 and 34,375.36

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Solution

The fourth proportional to 78,782.38, 118,107.52 and 34,375.36 is: 51,534.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,782.38 : 118,107.52 = 34,375.36 : x
  2. Step 2: Convert to fraction form
    78,782.38/118,107.52 = 34,375.36/x
  3. Step 3: Cross multiply
    78,782.38x = 118,107.52 × 34,375.36
  4. Step 4: Simplify right side
    78,782.38x = 4,059,988,518.71
  5. Step 5: Solve for x
    x = 4,059,988,518.71/78,782.38
  6. Step 6: Final answer
    x = 51,534.22

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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.