Home / 85,631.82-118,284.86-65,734.57

Finding the Fourth Proportional to 85,631.82, 118,284.86 and 65,734.57

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Solution

The fourth proportional to 85,631.82, 118,284.86 and 65,734.57 is: 90,800.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,631.82 : 118,284.86 = 65,734.57 : x
  2. Step 2: Convert to fraction form
    85,631.82/118,284.86 = 65,734.57/x
  3. Step 3: Cross multiply
    85,631.82x = 118,284.86 × 65,734.57
  4. Step 4: Simplify right side
    85,631.82x = 7,775,404,352.05
  5. Step 5: Solve for x
    x = 7,775,404,352.05/85,631.82
  6. Step 6: Final answer
    x = 90,800.41

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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.