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Finding the Fourth Proportional to 57,088.40, 85,640.79 and 17,648.58

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Solution

The fourth proportional to 57,088.40, 85,640.79 and 17,648.58 is: 26,475.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,088.40 : 85,640.79 = 17,648.58 : x
  2. Step 2: Convert to fraction form
    57,088.40/85,640.79 = 17,648.58/x
  3. Step 3: Cross multiply
    57,088.40x = 85,640.79 × 17,648.58
  4. Step 4: Simplify right side
    57,088.40x = 1,511,438,333.58
  5. Step 5: Solve for x
    x = 1,511,438,333.58/57,088.40
  6. Step 6: Final answer
    x = 26,475.40

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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.