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Finding the Fourth Proportional to 85,579.98, 118,028.67 and 64,120.14

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Solution

The fourth proportional to 85,579.98, 118,028.67 and 64,120.14 is: 88,432.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,579.98 : 118,028.67 = 64,120.14 : x
  2. Step 2: Convert to fraction form
    85,579.98/118,028.67 = 64,120.14/x
  3. Step 3: Cross multiply
    85,579.98x = 118,028.67 × 64,120.14
  4. Step 4: Simplify right side
    85,579.98x = 7,568,014,844.41
  5. Step 5: Solve for x
    x = 7,568,014,844.41/85,579.98
  6. Step 6: Final answer
    x = 88,432.07

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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.