Home / 28,003,772-42,012,742.80-7,809,016.16

Finding the Fourth Proportional to 28,003,772, 42,012,742.80 and 7,809,016.16

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Solution

The fourth proportional to 28,003,772, 42,012,742.80 and 7,809,016.16 is: 11,715,499.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,003,772 : 42,012,742.80 = 7,809,016.16 : x
  2. Step 2: Convert to fraction form
    28,003,772/42,012,742.80 = 7,809,016.16/x
  3. Step 3: Cross multiply
    28,003,772x = 42,012,742.80 × 7,809,016.16
  4. Step 4: Simplify right side
    28,003,772x = 328,078,187,451,123.62
  5. Step 5: Solve for x
    x = 328,078,187,451,123.62/28,003,772
  6. Step 6: Final answer
    x = 11,715,499.88

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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.