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Finding the Fourth Proportional to 57,018.54, 85,529.85 and 19,578.42

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Solution

The fourth proportional to 57,018.54, 85,529.85 and 19,578.42 is: 29,368.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,018.54 : 85,529.85 = 19,578.42 : x
  2. Step 2: Convert to fraction form
    57,018.54/85,529.85 = 19,578.42/x
  3. Step 3: Cross multiply
    57,018.54x = 85,529.85 × 19,578.42
  4. Step 4: Simplify right side
    57,018.54x = 1,674,539,325.84
  5. Step 5: Solve for x
    x = 1,674,539,325.84/57,018.54
  6. Step 6: Final answer
    x = 29,368.33

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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.