Home / 91,020.39-136,530.63-28,695.75

Finding the Fourth Proportional to 91,020.39, 136,530.63 and 28,695.75

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Solution

The fourth proportional to 91,020.39, 136,530.63 and 28,695.75 is: 43,043.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,020.39 : 136,530.63 = 28,695.75 : x
  2. Step 2: Convert to fraction form
    91,020.39/136,530.63 = 28,695.75/x
  3. Step 3: Cross multiply
    91,020.39x = 136,530.63 × 28,695.75
  4. Step 4: Simplify right side
    91,020.39x = 3,917,848,825.82
  5. Step 5: Solve for x
    x = 3,917,848,825.82/91,020.39
  6. Step 6: Final answer
    x = 43,043.64

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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.