Home / 85,187.28-117,558.32-49,398.08

Finding the Fourth Proportional to 85,187.28, 117,558.32 and 49,398.08

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Solution

The fourth proportional to 85,187.28, 117,558.32 and 49,398.08 is: 68,169.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,187.28 : 117,558.32 = 49,398.08 : x
  2. Step 2: Convert to fraction form
    85,187.28/117,558.32 = 49,398.08/x
  3. Step 3: Cross multiply
    85,187.28x = 117,558.32 × 49,398.08
  4. Step 4: Simplify right side
    85,187.28x = 5,807,155,296.03
  5. Step 5: Solve for x
    x = 5,807,155,296.03/85,187.28
  6. Step 6: Final answer
    x = 68,169.28

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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.