Home / 85,235.95-117,676.05-75,778.39

Finding the Fourth Proportional to 85,235.95, 117,676.05 and 75,778.39

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Solution

The fourth proportional to 85,235.95, 117,676.05 and 75,778.39 is: 104,619.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,235.95 : 117,676.05 = 75,778.39 : x
  2. Step 2: Convert to fraction form
    85,235.95/117,676.05 = 75,778.39/x
  3. Step 3: Cross multiply
    85,235.95x = 117,676.05 × 75,778.39
  4. Step 4: Simplify right side
    85,235.95x = 8,917,301,022.18
  5. Step 5: Solve for x
    x = 8,917,301,022.18/85,235.95
  6. Step 6: Final answer
    x = 104,619.02

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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.