Home / 85,338.22-117,679.35-56,647.75

Finding the Fourth Proportional to 85,338.22, 117,679.35 and 56,647.75

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Solution

The fourth proportional to 85,338.22, 117,679.35 and 56,647.75 is: 78,115.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,338.22 : 117,679.35 = 56,647.75 : x
  2. Step 2: Convert to fraction form
    85,338.22/117,679.35 = 56,647.75/x
  3. Step 3: Cross multiply
    85,338.22x = 117,679.35 × 56,647.75
  4. Step 4: Simplify right side
    85,338.22x = 6,666,270,398.96
  5. Step 5: Solve for x
    x = 6,666,270,398.96/85,338.22
  6. Step 6: Final answer
    x = 78,115.88

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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.