Home / 31,195,476.09-43,035,250.06-20,185,779.78

Finding the Fourth Proportional to 31,195,476.09, 43,035,250.06 and 20,185,779.78

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Solution

The fourth proportional to 31,195,476.09, 43,035,250.06 and 20,185,779.78 is: 27,846,989.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,195,476.09 : 43,035,250.06 = 20,185,779.78 : x
  2. Step 2: Convert to fraction form
    31,195,476.09/43,035,250.06 = 20,185,779.78/x
  3. Step 3: Cross multiply
    31,195,476.09x = 43,035,250.06 × 20,185,779.78
  4. Step 4: Simplify right side
    31,195,476.09x = 868,700,080,488,391.88
  5. Step 5: Solve for x
    x = 868,700,080,488,391.88/31,195,476.09
  6. Step 6: Final answer
    x = 27,846,989.03

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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.