Home / 85,844.20-128,783.74-29,686.44

Finding the Fourth Proportional to 85,844.20, 128,783.74 and 29,686.44

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Solution

The fourth proportional to 85,844.20, 128,783.74 and 29,686.44 is: 44,535.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,844.20 : 128,783.74 = 29,686.44 : x
  2. Step 2: Convert to fraction form
    85,844.20/128,783.74 = 29,686.44/x
  3. Step 3: Cross multiply
    85,844.20x = 128,783.74 × 29,686.44
  4. Step 4: Simplify right side
    85,844.20x = 3,823,130,770.49
  5. Step 5: Solve for x
    x = 3,823,130,770.49/85,844.20
  6. Step 6: Final answer
    x = 44,535.69

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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.