Home / 85,235.94-117,639.46-51,278.75

Finding the Fourth Proportional to 85,235.94, 117,639.46 and 51,278.75

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Solution

The fourth proportional to 85,235.94, 117,639.46 and 51,278.75 is: 70,773.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,235.94 : 117,639.46 = 51,278.75 : x
  2. Step 2: Convert to fraction form
    85,235.94/117,639.46 = 51,278.75/x
  3. Step 3: Cross multiply
    85,235.94x = 117,639.46 × 51,278.75
  4. Step 4: Simplify right side
    85,235.94x = 6,032,404,817.67
  5. Step 5: Solve for x
    x = 6,032,404,817.67/85,235.94
  6. Step 6: Final answer
    x = 70,773.02

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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.