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Finding the Fourth Proportional to 85,282.80, 117,719.64 and 51,310.32

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Solution

The fourth proportional to 85,282.80, 117,719.64 and 51,310.32 is: 70,825.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,282.80 : 117,719.64 = 51,310.32 : x
  2. Step 2: Convert to fraction form
    85,282.80/117,719.64 = 51,310.32/x
  3. Step 3: Cross multiply
    85,282.80x = 117,719.64 × 51,310.32
  4. Step 4: Simplify right side
    85,282.80x = 6,040,232,398.68
  5. Step 5: Solve for x
    x = 6,040,232,398.68/85,282.80
  6. Step 6: Final answer
    x = 70,825.92

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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.