Home / 91,271.23-136,910.64-31,340.89

Finding the Fourth Proportional to 91,271.23, 136,910.64 and 31,340.89

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Solution

The fourth proportional to 91,271.23, 136,910.64 and 31,340.89 is: 47,012.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,271.23 : 136,910.64 = 31,340.89 : x
  2. Step 2: Convert to fraction form
    91,271.23/136,910.64 = 31,340.89/x
  3. Step 3: Cross multiply
    91,271.23x = 136,910.64 × 31,340.89
  4. Step 4: Simplify right side
    91,271.23x = 4,290,901,308.07
  5. Step 5: Solve for x
    x = 4,290,901,308.07/91,271.23
  6. Step 6: Final answer
    x = 47,012.64

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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.