Home / 85,454.11-128,176.30-23,119.75

Finding the Fourth Proportional to 85,454.11, 128,176.30 and 23,119.75

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Solution

The fourth proportional to 85,454.11, 128,176.30 and 23,119.75 is: 34,678.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,454.11 : 128,176.30 = 23,119.75 : x
  2. Step 2: Convert to fraction form
    85,454.11/128,176.30 = 23,119.75/x
  3. Step 3: Cross multiply
    85,454.11x = 128,176.30 × 23,119.75
  4. Step 4: Simplify right side
    85,454.11x = 2,963,404,011.93
  5. Step 5: Solve for x
    x = 2,963,404,011.93/85,454.11
  6. Step 6: Final answer
    x = 34,678.31

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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.