Home / 81,561,740.40-122,484,328.20-43,297,988.40

Finding the Fourth Proportional to 81,561,740.40, 122,484,328.20 and 43,297,988.40

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Solution

The fourth proportional to 81,561,740.40, 122,484,328.20 and 43,297,988.40 is: 65,022,215.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,561,740.40 : 122,484,328.20 = 43,297,988.40 : x
  2. Step 2: Convert to fraction form
    81,561,740.40/122,484,328.20 = 43,297,988.40/x
  3. Step 3: Cross multiply
    81,561,740.40x = 122,484,328.20 × 43,297,988.40
  4. Step 4: Simplify right side
    81,561,740.40x = 5,303,325,021,585,393
  5. Step 5: Solve for x
    x = 5,303,325,021,585,393/81,561,740.40
  6. Step 6: Final answer
    x = 65,022,215.02

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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.