Home / 85,844.08-128,784.58-28,923.64

Finding the Fourth Proportional to 85,844.08, 128,784.58 and 28,923.64

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Solution

The fourth proportional to 85,844.08, 128,784.58 and 28,923.64 is: 43,391.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,844.08 : 128,784.58 = 28,923.64 : x
  2. Step 2: Convert to fraction form
    85,844.08/128,784.58 = 28,923.64/x
  3. Step 3: Cross multiply
    85,844.08x = 128,784.58 × 28,923.64
  4. Step 4: Simplify right side
    85,844.08x = 3,724,919,549.17
  5. Step 5: Solve for x
    x = 3,724,919,549.17/85,844.08
  6. Step 6: Final answer
    x = 43,391.69

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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.