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Finding the Fourth Proportional to 57,374.70, 86,074.20 and 17,390.40

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Solution

The fourth proportional to 57,374.70, 86,074.20 and 17,390.40 is: 26,089.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,374.70 : 86,074.20 = 17,390.40 : x
  2. Step 2: Convert to fraction form
    57,374.70/86,074.20 = 17,390.40/x
  3. Step 3: Cross multiply
    57,374.70x = 86,074.20 × 17,390.40
  4. Step 4: Simplify right side
    57,374.70x = 1,496,864,767.68
  5. Step 5: Solve for x
    x = 1,496,864,767.68/57,374.70
  6. Step 6: Final answer
    x = 26,089.28

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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.