Home / 91,242.05-136,866.85-31,311.72

Finding the Fourth Proportional to 91,242.05, 136,866.85 and 31,311.72

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Solution

The fourth proportional to 91,242.05, 136,866.85 and 31,311.72 is: 46,968.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,242.05 : 136,866.85 = 31,311.72 : x
  2. Step 2: Convert to fraction form
    91,242.05/136,866.85 = 31,311.72/x
  3. Step 3: Cross multiply
    91,242.05x = 136,866.85 × 31,311.72
  4. Step 4: Simplify right side
    91,242.05x = 4,285,536,484.48
  5. Step 5: Solve for x
    x = 4,285,536,484.48/91,242.05
  6. Step 6: Final answer
    x = 46,968.88

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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.