Home / 91,023.12-136,541.52-28,692

Finding the Fourth Proportional to 91,023.12, 136,541.52 and 28,692

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Solution

The fourth proportional to 91,023.12, 136,541.52 and 28,692 is: 43,040.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,023.12 : 136,541.52 = 28,692 : x
  2. Step 2: Convert to fraction form
    91,023.12/136,541.52 = 28,692/x
  3. Step 3: Cross multiply
    91,023.12x = 136,541.52 × 28,692
  4. Step 4: Simplify right side
    91,023.12x = 3,917,649,291.84
  5. Step 5: Solve for x
    x = 3,917,649,291.84/91,023.12
  6. Step 6: Final answer
    x = 43,040.16

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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.