Home / 85,552.20-128,346.53-43,437.87

Finding the Fourth Proportional to 85,552.20, 128,346.53 and 43,437.87

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Solution

The fourth proportional to 85,552.20, 128,346.53 and 43,437.87 is: 65,166.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,552.20 : 128,346.53 = 43,437.87 : x
  2. Step 2: Convert to fraction form
    85,552.20/128,346.53 = 43,437.87/x
  3. Step 3: Cross multiply
    85,552.20x = 128,346.53 × 43,437.87
  4. Step 4: Simplify right side
    85,552.20x = 5,575,099,667.90
  5. Step 5: Solve for x
    x = 5,575,099,667.90/85,552.20
  6. Step 6: Final answer
    x = 65,166.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.