Home / 91,188.23-125,836.47-57,215.03

Finding the Fourth Proportional to 91,188.23, 125,836.47 and 57,215.03

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Solution

The fourth proportional to 91,188.23, 125,836.47 and 57,215.03 is: 78,954.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,188.23 : 125,836.47 = 57,215.03 : x
  2. Step 2: Convert to fraction form
    91,188.23/125,836.47 = 57,215.03/x
  3. Step 3: Cross multiply
    91,188.23x = 125,836.47 × 57,215.03
  4. Step 4: Simplify right side
    91,188.23x = 7,199,736,776.96
  5. Step 5: Solve for x
    x = 7,199,736,776.96/91,188.23
  6. Step 6: Final answer
    x = 78,954.68

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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.