Home / 86,109.38-129,165.35-56,715.46

Finding the Fourth Proportional to 86,109.38, 129,165.35 and 56,715.46

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Solution

The fourth proportional to 86,109.38, 129,165.35 and 56,715.46 is: 85,074.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,109.38 : 129,165.35 = 56,715.46 : x
  2. Step 2: Convert to fraction form
    86,109.38/129,165.35 = 56,715.46/x
  3. Step 3: Cross multiply
    86,109.38x = 129,165.35 × 56,715.46
  4. Step 4: Simplify right side
    86,109.38x = 7,325,672,241.31
  5. Step 5: Solve for x
    x = 7,325,672,241.31/86,109.38
  6. Step 6: Final answer
    x = 85,074.03

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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.