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Finding the Fourth Proportional to 86,141.88, 118,880.73 and 48,418.56

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Solution

The fourth proportional to 86,141.88, 118,880.73 and 48,418.56 is: 66,820.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,141.88 : 118,880.73 = 48,418.56 : x
  2. Step 2: Convert to fraction form
    86,141.88/118,880.73 = 48,418.56/x
  3. Step 3: Cross multiply
    86,141.88x = 118,880.73 × 48,418.56
  4. Step 4: Simplify right side
    86,141.88x = 5,756,033,758.35
  5. Step 5: Solve for x
    x = 5,756,033,758.35/86,141.88
  6. Step 6: Final answer
    x = 66,820.39

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1.5x scale

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.