Home / 85,985.32-118,665.06-57,255.72

Finding the Fourth Proportional to 85,985.32, 118,665.06 and 57,255.72

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Solution

The fourth proportional to 85,985.32, 118,665.06 and 57,255.72 is: 79,016.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,985.32 : 118,665.06 = 57,255.72 : x
  2. Step 2: Convert to fraction form
    85,985.32/118,665.06 = 57,255.72/x
  3. Step 3: Cross multiply
    85,985.32x = 118,665.06 × 57,255.72
  4. Step 4: Simplify right side
    85,985.32x = 6,794,253,449.14
  5. Step 5: Solve for x
    x = 6,794,253,449.14/85,985.32
  6. Step 6: Final answer
    x = 79,016.44

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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.