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Finding the Fourth Proportional to 57,018.70, 85,492.51 and 21,950.15

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Solution

The fourth proportional to 57,018.70, 85,492.51 and 21,950.15 is: 32,911.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,018.70 : 85,492.51 = 21,950.15 : x
  2. Step 2: Convert to fraction form
    57,018.70/85,492.51 = 21,950.15/x
  3. Step 3: Cross multiply
    57,018.70x = 85,492.51 × 21,950.15
  4. Step 4: Simplify right side
    57,018.70x = 1,876,573,418.38
  5. Step 5: Solve for x
    x = 1,876,573,418.38/57,018.70
  6. Step 6: Final answer
    x = 32,911.54

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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.