Home / 91,128.63-136,694.16-31,966.02

Finding the Fourth Proportional to 91,128.63, 136,694.16 and 31,966.02

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Solution

The fourth proportional to 91,128.63, 136,694.16 and 31,966.02 is: 47,949.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,128.63 : 136,694.16 = 31,966.02 : x
  2. Step 2: Convert to fraction form
    91,128.63/136,694.16 = 31,966.02/x
  3. Step 3: Cross multiply
    91,128.63x = 136,694.16 × 31,966.02
  4. Step 4: Simplify right side
    91,128.63x = 4,369,568,252.44
  5. Step 5: Solve for x
    x = 4,369,568,252.44/91,128.63
  6. Step 6: Final answer
    x = 47,949.46

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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.