Home / 85,861.26-128,790.45-23,531.76

Finding the Fourth Proportional to 85,861.26, 128,790.45 and 23,531.76

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Solution

The fourth proportional to 85,861.26, 128,790.45 and 23,531.76 is: 35,297.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,861.26 : 128,790.45 = 23,531.76 : x
  2. Step 2: Convert to fraction form
    85,861.26/128,790.45 = 23,531.76/x
  3. Step 3: Cross multiply
    85,861.26x = 128,790.45 × 23,531.76
  4. Step 4: Simplify right side
    85,861.26x = 3,030,665,959.69
  5. Step 5: Solve for x
    x = 3,030,665,959.69/85,861.26
  6. Step 6: Final answer
    x = 35,297.25

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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.