Home / 85,928.13-128,861.43-29,753.15

Finding the Fourth Proportional to 85,928.13, 128,861.43 and 29,753.15

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Solution

The fourth proportional to 85,928.13, 128,861.43 and 29,753.15 is: 44,619.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,928.13 : 128,861.43 = 29,753.15 : x
  2. Step 2: Convert to fraction form
    85,928.13/128,861.43 = 29,753.15/x
  3. Step 3: Cross multiply
    85,928.13x = 128,861.43 × 29,753.15
  4. Step 4: Simplify right side
    85,928.13x = 3,834,033,456.00
  5. Step 5: Solve for x
    x = 3,834,033,456.00/85,928.13
  6. Step 6: Final answer
    x = 44,619.08

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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.