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Finding the Fourth Proportional to 38,679.40, 58,019.10 and 26,205.40

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Solution

The fourth proportional to 38,679.40, 58,019.10 and 26,205.40 is: 39,308.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,679.40 : 58,019.10 = 26,205.40 : x
  2. Step 2: Convert to fraction form
    38,679.40/58,019.10 = 26,205.40/x
  3. Step 3: Cross multiply
    38,679.40x = 58,019.10 × 26,205.40
  4. Step 4: Simplify right side
    38,679.40x = 1,520,413,723.14
  5. Step 5: Solve for x
    x = 1,520,413,723.14/38,679.40
  6. Step 6: Final answer
    x = 39,308.10

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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.