Home / 91,020.42-136,530.66-28,695.78

Finding the Fourth Proportional to 91,020.42, 136,530.66 and 28,695.78

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Solution

The fourth proportional to 91,020.42, 136,530.66 and 28,695.78 is: 43,043.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,020.42 : 136,530.66 = 28,695.78 : x
  2. Step 2: Convert to fraction form
    91,020.42/136,530.66 = 28,695.78/x
  3. Step 3: Cross multiply
    91,020.42x = 136,530.66 × 28,695.78
  4. Step 4: Simplify right side
    91,020.42x = 3,917,853,782.61
  5. Step 5: Solve for x
    x = 3,917,853,782.61/91,020.42
  6. Step 6: Final answer
    x = 43,043.68

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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.