Home / 90,359.08-135,548.62-31,188.04

Finding the Fourth Proportional to 90,359.08, 135,548.62 and 31,188.04

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Solution

The fourth proportional to 90,359.08, 135,548.62 and 31,188.04 is: 46,785.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,359.08 : 135,548.62 = 31,188.04 : x
  2. Step 2: Convert to fraction form
    90,359.08/135,548.62 = 31,188.04/x
  3. Step 3: Cross multiply
    90,359.08x = 135,548.62 × 31,188.04
  4. Step 4: Simplify right side
    90,359.08x = 4,227,495,782.50
  5. Step 5: Solve for x
    x = 4,227,495,782.50/90,359.08
  6. Step 6: Final answer
    x = 46,785.51

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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.