Home / 112,874.85-155,768.79-61,887.47

Finding the Fourth Proportional to 112,874.85, 155,768.79 and 61,887.47

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Solution

The fourth proportional to 112,874.85, 155,768.79 and 61,887.47 is: 85,405.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,874.85 : 155,768.79 = 61,887.47 : x
  2. Step 2: Convert to fraction form
    112,874.85/155,768.79 = 61,887.47/x
  3. Step 3: Cross multiply
    112,874.85x = 155,768.79 × 61,887.47
  4. Step 4: Simplify right side
    112,874.85x = 9,640,135,539.22
  5. Step 5: Solve for x
    x = 9,640,135,539.22/112,874.85
  6. Step 6: Final answer
    x = 85,405.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.