Home / 57,218.08-85,830.89-19,781.77

Finding the Fourth Proportional to 57,218.08, 85,830.89 and 19,781.77

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Solution

The fourth proportional to 57,218.08, 85,830.89 and 19,781.77 is: 29,673.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,218.08 : 85,830.89 = 19,781.77 : x
  2. Step 2: Convert to fraction form
    57,218.08/85,830.89 = 19,781.77/x
  3. Step 3: Cross multiply
    57,218.08x = 85,830.89 × 19,781.77
  4. Step 4: Simplify right side
    57,218.08x = 1,697,886,396.81
  5. Step 5: Solve for x
    x = 1,697,886,396.81/57,218.08
  6. Step 6: Final answer
    x = 29,673.95

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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.