Home / 85,309.20-117,735.12-63,761.58

Finding the Fourth Proportional to 85,309.20, 117,735.12 and 63,761.58

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Solution

The fourth proportional to 85,309.20, 117,735.12 and 63,761.58 is: 87,997.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,309.20 : 117,735.12 = 63,761.58 : x
  2. Step 2: Convert to fraction form
    85,309.20/117,735.12 = 63,761.58/x
  3. Step 3: Cross multiply
    85,309.20x = 117,735.12 × 63,761.58
  4. Step 4: Simplify right side
    85,309.20x = 7,506,977,272.69
  5. Step 5: Solve for x
    x = 7,506,977,272.69/85,309.20
  6. Step 6: Final answer
    x = 87,997.28

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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.