Home / 31,547,468.40-47,321,202.60-12,378,850.80

Finding the Fourth Proportional to 31,547,468.40, 47,321,202.60 and 12,378,850.80

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Solution

The fourth proportional to 31,547,468.40, 47,321,202.60 and 12,378,850.80 is: 18,568,276.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,547,468.40 : 47,321,202.60 = 12,378,850.80 : x
  2. Step 2: Convert to fraction form
    31,547,468.40/47,321,202.60 = 12,378,850.80/x
  3. Step 3: Cross multiply
    31,547,468.40x = 47,321,202.60 × 12,378,850.80
  4. Step 4: Simplify right side
    31,547,468.40x = 585,782,106,661,972.12
  5. Step 5: Solve for x
    x = 585,782,106,661,972.12/31,547,468.40
  6. Step 6: Final answer
    x = 18,568,276.20

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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.