Home / 90,709.14-136,076.02-31,537.15

Finding the Fourth Proportional to 90,709.14, 136,076.02 and 31,537.15

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Solution

The fourth proportional to 90,709.14, 136,076.02 and 31,537.15 is: 47,310.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,709.14 : 136,076.02 = 31,537.15 : x
  2. Step 2: Convert to fraction form
    90,709.14/136,076.02 = 31,537.15/x
  3. Step 3: Cross multiply
    90,709.14x = 136,076.02 × 31,537.15
  4. Step 4: Simplify right side
    90,709.14x = 4,291,449,893.56
  5. Step 5: Solve for x
    x = 4,291,449,893.56/90,709.14
  6. Step 6: Final answer
    x = 47,310.01

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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.