Home / 85,115.92-117,464.16-47,389.36

Finding the Fourth Proportional to 85,115.92, 117,464.16 and 47,389.36

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Solution

The fourth proportional to 85,115.92, 117,464.16 and 47,389.36 is: 65,399.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,115.92 : 117,464.16 = 47,389.36 : x
  2. Step 2: Convert to fraction form
    85,115.92/117,464.16 = 47,389.36/x
  3. Step 3: Cross multiply
    85,115.92x = 117,464.16 × 47,389.36
  4. Step 4: Simplify right side
    85,115.92x = 5,566,551,365.34
  5. Step 5: Solve for x
    x = 5,566,551,365.34/85,115.92
  6. Step 6: Final answer
    x = 65,399.65

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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.