Home / 28,446,805.80-42,665,400-7,971,816.56

Finding the Fourth Proportional to 28,446,805.80, 42,665,400 and 7,971,816.56

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Solution

The fourth proportional to 28,446,805.80, 42,665,400 and 7,971,816.56 is: 11,956,377.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,446,805.80 : 42,665,400 = 7,971,816.56 : x
  2. Step 2: Convert to fraction form
    28,446,805.80/42,665,400 = 7,971,816.56/x
  3. Step 3: Cross multiply
    28,446,805.80x = 42,665,400 × 7,971,816.56
  4. Step 4: Simplify right side
    28,446,805.80x = 340,120,742,045,697
  5. Step 5: Solve for x
    x = 340,120,742,045,697/28,446,805.80
  6. Step 6: Final answer
    x = 11,956,377.26

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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.