Home / 85,212.15-117,601.56-51,231.75

Finding the Fourth Proportional to 85,212.15, 117,601.56 and 51,231.75

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Solution

The fourth proportional to 85,212.15, 117,601.56 and 51,231.75 is: 70,705.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,212.15 : 117,601.56 = 51,231.75 : x
  2. Step 2: Convert to fraction form
    85,212.15/117,601.56 = 51,231.75/x
  3. Step 3: Cross multiply
    85,212.15x = 117,601.56 × 51,231.75
  4. Step 4: Simplify right side
    85,212.15x = 6,024,933,721.53
  5. Step 5: Solve for x
    x = 6,024,933,721.53/85,212.15
  6. Step 6: Final answer
    x = 70,705.10

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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.