Home / 85,321.08-117,714.06-51,780.60

Finding the Fourth Proportional to 85,321.08, 117,714.06 and 51,780.60

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Solution

The fourth proportional to 85,321.08, 117,714.06 and 51,780.60 is: 71,439.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,321.08 : 117,714.06 = 51,780.60 : x
  2. Step 2: Convert to fraction form
    85,321.08/117,714.06 = 51,780.60/x
  3. Step 3: Cross multiply
    85,321.08x = 117,714.06 × 51,780.60
  4. Step 4: Simplify right side
    85,321.08x = 6,095,304,655.24
  5. Step 5: Solve for x
    x = 6,095,304,655.24/85,321.08
  6. Step 6: Final answer
    x = 71,439.61

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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.