Home / 42,509,845.40-63,764,768.10-20,986,484.90

Finding the Fourth Proportional to 42,509,845.40, 63,764,768.10 and 20,986,484.90

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Solution

The fourth proportional to 42,509,845.40, 63,764,768.10 and 20,986,484.90 is: 31,479,727.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,509,845.40 : 63,764,768.10 = 20,986,484.90 : x
  2. Step 2: Convert to fraction form
    42,509,845.40/63,764,768.10 = 20,986,484.90/x
  3. Step 3: Cross multiply
    42,509,845.40x = 63,764,768.10 × 20,986,484.90
  4. Step 4: Simplify right side
    42,509,845.40x = 1,338,198,342,882,651.75
  5. Step 5: Solve for x
    x = 1,338,198,342,882,651.75/42,509,845.40
  6. Step 6: Final answer
    x = 31,479,727.35

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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.