Home / 57,781.08-86,661.72-18,329.40

Finding the Fourth Proportional to 57,781.08, 86,661.72 and 18,329.40

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Solution

The fourth proportional to 57,781.08, 86,661.72 and 18,329.40 is: 27,490.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,781.08 : 86,661.72 = 18,329.40 : x
  2. Step 2: Convert to fraction form
    57,781.08/86,661.72 = 18,329.40/x
  3. Step 3: Cross multiply
    57,781.08x = 86,661.72 × 18,329.40
  4. Step 4: Simplify right side
    57,781.08x = 1,588,457,330.57
  5. Step 5: Solve for x
    x = 1,588,457,330.57/57,781.08
  6. Step 6: Final answer
    x = 27,490.96

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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.