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Finding the Fourth Proportional to 43,787,474.40, 65,674,990.80 and 13,498,399.20

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Solution

The fourth proportional to 43,787,474.40, 65,674,990.80 and 13,498,399.20 is: 20,245,681.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,787,474.40 : 65,674,990.80 = 13,498,399.20 : x
  2. Step 2: Convert to fraction form
    43,787,474.40/65,674,990.80 = 13,498,399.20/x
  3. Step 3: Cross multiply
    43,787,474.40x = 65,674,990.80 × 13,498,399.20
  4. Step 4: Simplify right side
    43,787,474.40x = 886,507,243,274,727.25
  5. Step 5: Solve for x
    x = 886,507,243,274,727.25/43,787,474.40
  6. Step 6: Final answer
    x = 20,245,681.11

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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.