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Finding the Fourth Proportional to 40,398.15, 60,624.90 and 14,102.90

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Solution

The fourth proportional to 40,398.15, 60,624.90 and 14,102.90 is: 21,164.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,398.15 : 60,624.90 = 14,102.90 : x
  2. Step 2: Convert to fraction form
    40,398.15/60,624.90 = 14,102.90/x
  3. Step 3: Cross multiply
    40,398.15x = 60,624.90 × 14,102.90
  4. Step 4: Simplify right side
    40,398.15x = 854,986,599.09
  5. Step 5: Solve for x
    x = 854,986,599.09/40,398.15
  6. Step 6: Final answer
    x = 21,164.00

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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.