Home / 31,913,480.25-47,870,221.46-7,978,952.25

Finding the Fourth Proportional to 31,913,480.25, 47,870,221.46 and 7,978,952.25

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Solution

The fourth proportional to 31,913,480.25, 47,870,221.46 and 7,978,952.25 is: 11,968,428.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,913,480.25 : 47,870,221.46 = 7,978,952.25 : x
  2. Step 2: Convert to fraction form
    31,913,480.25/47,870,221.46 = 7,978,952.25/x
  3. Step 3: Cross multiply
    31,913,480.25x = 47,870,221.46 × 7,978,952.25
  4. Step 4: Simplify right side
    31,913,480.25x = 381,954,211,186,370.50
  5. Step 5: Solve for x
    x = 381,954,211,186,370.50/31,913,480.25
  6. Step 6: Final answer
    x = 11,968,428.65

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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.