Home / 81,561,618.40-122,484,145.20-43,297,866.40

Finding the Fourth Proportional to 81,561,618.40, 122,484,145.20 and 43,297,866.40

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Solution

The fourth proportional to 81,561,618.40, 122,484,145.20 and 43,297,866.40 is: 65,022,031.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,561,618.40 : 122,484,145.20 = 43,297,866.40 : x
  2. Step 2: Convert to fraction form
    81,561,618.40/122,484,145.20 = 43,297,866.40/x
  3. Step 3: Cross multiply
    81,561,618.40x = 122,484,145.20 × 43,297,866.40
  4. Step 4: Simplify right side
    81,561,618.40x = 5,303,302,154,987,801
  5. Step 5: Solve for x
    x = 5,303,302,154,987,801/81,561,618.40
  6. Step 6: Final answer
    x = 65,022,031.92

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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.