Home / 31,378,297.04-43,289,598.12-18,145,028.72

Finding the Fourth Proportional to 31,378,297.04, 43,289,598.12 and 18,145,028.72

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Solution

The fourth proportional to 31,378,297.04, 43,289,598.12 and 18,145,028.72 is: 25,032,939.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,378,297.04 : 43,289,598.12 = 18,145,028.72 : x
  2. Step 2: Convert to fraction form
    31,378,297.04/43,289,598.12 = 18,145,028.72/x
  3. Step 3: Cross multiply
    31,378,297.04x = 43,289,598.12 × 18,145,028.72
  4. Step 4: Simplify right side
    31,378,297.04x = 785,491,001,164,657.88
  5. Step 5: Solve for x
    x = 785,491,001,164,657.88/31,378,297.04
  6. Step 6: Final answer
    x = 25,032,939.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.