Home / 55,885,321.12-77,121,613.20-31,439,028.64

Finding the Fourth Proportional to 55,885,321.12, 77,121,613.20 and 31,439,028.64

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Solution

The fourth proportional to 55,885,321.12, 77,121,613.20 and 31,439,028.64 is: 43,385,786.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,885,321.12 : 77,121,613.20 = 31,439,028.64 : x
  2. Step 2: Convert to fraction form
    55,885,321.12/77,121,613.20 = 31,439,028.64/x
  3. Step 3: Cross multiply
    55,885,321.12x = 77,121,613.20 × 31,439,028.64
  4. Step 4: Simplify right side
    55,885,321.12x = 2,424,628,606,157,802
  5. Step 5: Solve for x
    x = 2,424,628,606,157,802/55,885,321.12
  6. Step 6: Final answer
    x = 43,385,786.42

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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.