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Finding the Fourth Proportional to 40,287.88, 60,430 and 13,994.67

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Solution

The fourth proportional to 40,287.88, 60,430 and 13,994.67 is: 20,991.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,287.88 : 60,430 = 13,994.67 : x
  2. Step 2: Convert to fraction form
    40,287.88/60,430 = 13,994.67/x
  3. Step 3: Cross multiply
    40,287.88x = 60,430 × 13,994.67
  4. Step 4: Simplify right side
    40,287.88x = 845,697,908.10
  5. Step 5: Solve for x
    x = 845,697,908.10/40,287.88
  6. Step 6: Final answer
    x = 20,991.37

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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.