Home / 70,015,861.80-105,019,996.23-21,493,723.86

Finding the Fourth Proportional to 70,015,861.80, 105,019,996.23 and 21,493,723.86

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Solution

The fourth proportional to 70,015,861.80, 105,019,996.23 and 21,493,723.86 is: 32,239,420.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,015,861.80 : 105,019,996.23 = 21,493,723.86 : x
  2. Step 2: Convert to fraction form
    70,015,861.80/105,019,996.23 = 21,493,723.86/x
  3. Step 3: Cross multiply
    70,015,861.80x = 105,019,996.23 × 21,493,723.86
  4. Step 4: Simplify right side
    70,015,861.80x = 2,257,270,798,745,861
  5. Step 5: Solve for x
    x = 2,257,270,798,745,861/70,015,861.80
  6. Step 6: Final answer
    x = 32,239,420.34

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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.