Home / 85,905.24-128,826.97-29,730.11

Finding the Fourth Proportional to 85,905.24, 128,826.97 and 29,730.11

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Solution

The fourth proportional to 85,905.24, 128,826.97 and 29,730.11 is: 44,584.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,905.24 : 128,826.97 = 29,730.11 : x
  2. Step 2: Convert to fraction form
    85,905.24/128,826.97 = 29,730.11/x
  3. Step 3: Cross multiply
    85,905.24x = 128,826.97 × 29,730.11
  4. Step 4: Simplify right side
    85,905.24x = 3,830,039,270.61
  5. Step 5: Solve for x
    x = 3,830,039,270.61/85,905.24
  6. Step 6: Final answer
    x = 44,584.47

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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.