Home / 91,128.13-136,725.01-31,973.02

Finding the Fourth Proportional to 91,128.13, 136,725.01 and 31,973.02

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Solution

The fourth proportional to 91,128.13, 136,725.01 and 31,973.02 is: 47,971.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,128.13 : 136,725.01 = 31,973.02 : x
  2. Step 2: Convert to fraction form
    91,128.13/136,725.01 = 31,973.02/x
  3. Step 3: Cross multiply
    91,128.13x = 136,725.01 × 31,973.02
  4. Step 4: Simplify right side
    91,128.13x = 4,371,511,057.49
  5. Step 5: Solve for x
    x = 4,371,511,057.49/91,128.13
  6. Step 6: Final answer
    x = 47,971.04

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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.