Home / 91,715.49-137,556.63-31,743.90

Finding the Fourth Proportional to 91,715.49, 137,556.63 and 31,743.90

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Solution

The fourth proportional to 91,715.49, 137,556.63 and 31,743.90 is: 47,610.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,715.49 : 137,556.63 = 31,743.90 : x
  2. Step 2: Convert to fraction form
    91,715.49/137,556.63 = 31,743.90/x
  3. Step 3: Cross multiply
    91,715.49x = 137,556.63 × 31,743.90
  4. Step 4: Simplify right side
    91,715.49x = 4,366,583,907.06
  5. Step 5: Solve for x
    x = 4,366,583,907.06/91,715.49
  6. Step 6: Final answer
    x = 47,610.10

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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.