Home / 85,400.27-117,887.13-55,188.08

Finding the Fourth Proportional to 85,400.27, 117,887.13 and 55,188.08

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Solution

The fourth proportional to 85,400.27, 117,887.13 and 55,188.08 is: 76,182.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,400.27 : 117,887.13 = 55,188.08 : x
  2. Step 2: Convert to fraction form
    85,400.27/117,887.13 = 55,188.08/x
  3. Step 3: Cross multiply
    85,400.27x = 117,887.13 × 55,188.08
  4. Step 4: Simplify right side
    85,400.27x = 6,505,963,771.97
  5. Step 5: Solve for x
    x = 6,505,963,771.97/85,400.27
  6. Step 6: Final answer
    x = 76,182.01

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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.