Home / 69,491,848.32-104,238,575.04-20,970,122.40

Finding the Fourth Proportional to 69,491,848.32, 104,238,575.04 and 20,970,122.40

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Solution

The fourth proportional to 69,491,848.32, 104,238,575.04 and 20,970,122.40 is: 31,455,425.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,491,848.32 : 104,238,575.04 = 20,970,122.40 : x
  2. Step 2: Convert to fraction form
    69,491,848.32/104,238,575.04 = 20,970,122.40/x
  3. Step 3: Cross multiply
    69,491,848.32x = 104,238,575.04 × 20,970,122.40
  4. Step 4: Simplify right side
    69,491,848.32x = 2,185,895,677,390,385
  5. Step 5: Solve for x
    x = 2,185,895,677,390,385/69,491,848.32
  6. Step 6: Final answer
    x = 31,455,425.78

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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.