Home / 85,209.72-117,589.64-51,237.66

Finding the Fourth Proportional to 85,209.72, 117,589.64 and 51,237.66

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Solution

The fourth proportional to 85,209.72, 117,589.64 and 51,237.66 is: 70,708.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,209.72 : 117,589.64 = 51,237.66 : x
  2. Step 2: Convert to fraction form
    85,209.72/117,589.64 = 51,237.66/x
  3. Step 3: Cross multiply
    85,209.72x = 117,589.64 × 51,237.66
  4. Step 4: Simplify right side
    85,209.72x = 6,025,017,993.84
  5. Step 5: Solve for x
    x = 6,025,017,993.84/85,209.72
  6. Step 6: Final answer
    x = 70,708.11

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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.