Home / 69,491,852.32-104,238,581.04-20,970,126.40

Finding the Fourth Proportional to 69,491,852.32, 104,238,581.04 and 20,970,126.40

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Solution

The fourth proportional to 69,491,852.32, 104,238,581.04 and 20,970,126.40 is: 31,455,431.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,491,852.32 : 104,238,581.04 = 20,970,126.40 : x
  2. Step 2: Convert to fraction form
    69,491,852.32/104,238,581.04 = 20,970,126.40/x
  3. Step 3: Cross multiply
    69,491,852.32x = 104,238,581.04 × 20,970,126.40
  4. Step 4: Simplify right side
    69,491,852.32x = 2,185,896,220,165,443.50
  5. Step 5: Solve for x
    x = 2,185,896,220,165,443.50/69,491,852.32
  6. Step 6: Final answer
    x = 31,455,431.78

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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.