Home / 91,143.04-125,742.33-57,092.26

Finding the Fourth Proportional to 91,143.04, 125,742.33 and 57,092.26

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Solution

The fourth proportional to 91,143.04, 125,742.33 and 57,092.26 is: 78,765.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,143.04 : 125,742.33 = 57,092.26 : x
  2. Step 2: Convert to fraction form
    91,143.04/125,742.33 = 57,092.26/x
  3. Step 3: Cross multiply
    91,143.04x = 125,742.33 × 57,092.26
  4. Step 4: Simplify right side
    91,143.04x = 7,178,913,797.37
  5. Step 5: Solve for x
    x = 7,178,913,797.37/91,143.04
  6. Step 6: Final answer
    x = 78,765.35

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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.