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Finding the Fourth Proportional to 43,703,054.70, 65,554,582.05 and 20,978,472.30

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Solution

The fourth proportional to 43,703,054.70, 65,554,582.05 and 20,978,472.30 is: 31,467,708.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,703,054.70 : 65,554,582.05 = 20,978,472.30 : x
  2. Step 2: Convert to fraction form
    43,703,054.70/65,554,582.05 = 20,978,472.30/x
  3. Step 3: Cross multiply
    43,703,054.70x = 65,554,582.05 × 20,978,472.30
  4. Step 4: Simplify right side
    43,703,054.70x = 1,375,234,983,674,002.25
  5. Step 5: Solve for x
    x = 1,375,234,983,674,002.25/43,703,054.70
  6. Step 6: Final answer
    x = 31,467,708.45

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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.