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Finding the Fourth Proportional to 57,085.54, 85,607.07 and 19,635.10

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Solution

The fourth proportional to 57,085.54, 85,607.07 and 19,635.10 is: 29,445.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,085.54 : 85,607.07 = 19,635.10 : x
  2. Step 2: Convert to fraction form
    57,085.54/85,607.07 = 19,635.10/x
  3. Step 3: Cross multiply
    57,085.54x = 85,607.07 × 19,635.10
  4. Step 4: Simplify right side
    57,085.54x = 1,680,903,380.16
  5. Step 5: Solve for x
    x = 1,680,903,380.16/57,085.54
  6. Step 6: Final answer
    x = 29,445.34

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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.