Home / 90,828.02-136,198.29-31,662.38

Finding the Fourth Proportional to 90,828.02, 136,198.29 and 31,662.38

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Solution

The fourth proportional to 90,828.02, 136,198.29 and 31,662.38 is: 47,478.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,828.02 : 136,198.29 = 31,662.38 : x
  2. Step 2: Convert to fraction form
    90,828.02/136,198.29 = 31,662.38/x
  3. Step 3: Cross multiply
    90,828.02x = 136,198.29 × 31,662.38
  4. Step 4: Simplify right side
    90,828.02x = 4,312,361,783.72
  5. Step 5: Solve for x
    x = 4,312,361,783.72/90,828.02
  6. Step 6: Final answer
    x = 47,478.32

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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.