Home / 91,021.11-136,538.58-31,030.95

Finding the Fourth Proportional to 91,021.11, 136,538.58 and 31,030.95

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Solution

The fourth proportional to 91,021.11, 136,538.58 and 31,030.95 is: 46,548.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,021.11 : 136,538.58 = 31,030.95 : x
  2. Step 2: Convert to fraction form
    91,021.11/136,538.58 = 31,030.95/x
  3. Step 3: Cross multiply
    91,021.11x = 136,538.58 × 31,030.95
  4. Step 4: Simplify right side
    91,021.11x = 4,236,921,849.05
  5. Step 5: Solve for x
    x = 4,236,921,849.05/91,021.11
  6. Step 6: Final answer
    x = 46,548.78

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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.