Home / 85,076.76-117,355.32-57,899.64

Finding the Fourth Proportional to 85,076.76, 117,355.32 and 57,899.64

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Solution

The fourth proportional to 85,076.76, 117,355.32 and 57,899.64 is: 79,867.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,076.76 : 117,355.32 = 57,899.64 : x
  2. Step 2: Convert to fraction form
    85,076.76/117,355.32 = 57,899.64/x
  3. Step 3: Cross multiply
    85,076.76x = 117,355.32 × 57,899.64
  4. Step 4: Simplify right side
    85,076.76x = 6,794,830,780.08
  5. Step 5: Solve for x
    x = 6,794,830,780.08/85,076.76
  6. Step 6: Final answer
    x = 79,867.06

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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.