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Finding the Fourth Proportional to 30,416.02, 41,972.90 and 16,987.02

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Solution

The fourth proportional to 30,416.02, 41,972.90 and 16,987.02 is: 23,441.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,416.02 : 41,972.90 = 16,987.02 : x
  2. Step 2: Convert to fraction form
    30,416.02/41,972.90 = 16,987.02/x
  3. Step 3: Cross multiply
    30,416.02x = 41,972.90 × 16,987.02
  4. Step 4: Simplify right side
    30,416.02x = 712,994,491.76
  5. Step 5: Solve for x
    x = 712,994,491.76/30,416.02
  6. Step 6: Final answer
    x = 23,441.41

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.