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Finding the Fourth Proportional to 85,878.66, 118,490.12 and 49,571.22

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Solution

The fourth proportional to 85,878.66, 118,490.12 and 49,571.22 is: 68,395.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,878.66 : 118,490.12 = 49,571.22 : x
  2. Step 2: Convert to fraction form
    85,878.66/118,490.12 = 49,571.22/x
  3. Step 3: Cross multiply
    85,878.66x = 118,490.12 × 49,571.22
  4. Step 4: Simplify right side
    85,878.66x = 5,873,699,806.35
  5. Step 5: Solve for x
    x = 5,873,699,806.35/85,878.66
  6. Step 6: Final answer
    x = 68,395.34

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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.