Home / 85,335,494.63-128,003,304.22-20,639,361.97

Finding the Fourth Proportional to 85,335,494.63, 128,003,304.22 and 20,639,361.97

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Solution

The fourth proportional to 85,335,494.63, 128,003,304.22 and 20,639,361.97 is: 30,959,058.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,335,494.63 : 128,003,304.22 = 20,639,361.97 : x
  2. Step 2: Convert to fraction form
    85,335,494.63/128,003,304.22 = 20,639,361.97/x
  3. Step 3: Cross multiply
    85,335,494.63x = 128,003,304.22 × 20,639,361.97
  4. Step 4: Simplify right side
    85,335,494.63x = 2,641,906,528,781,002
  5. Step 5: Solve for x
    x = 2,641,906,528,781,002/85,335,494.63
  6. Step 6: Final answer
    x = 30,959,058.01

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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.