Home / 90,709.45-136,076.49-31,537.46

Finding the Fourth Proportional to 90,709.45, 136,076.49 and 31,537.46

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Solution

The fourth proportional to 90,709.45, 136,076.49 and 31,537.46 is: 47,310.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,709.45 : 136,076.49 = 31,537.46 : x
  2. Step 2: Convert to fraction form
    90,709.45/136,076.49 = 31,537.46/x
  3. Step 3: Cross multiply
    90,709.45x = 136,076.49 × 31,537.46
  4. Step 4: Simplify right side
    90,709.45x = 4,291,506,860.32
  5. Step 5: Solve for x
    x = 4,291,506,860.32/90,709.45
  6. Step 6: Final answer
    x = 47,310.47

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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.