Home / 90,835.68-136,204.10-31,655.46

Finding the Fourth Proportional to 90,835.68, 136,204.10 and 31,655.46

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Solution

The fourth proportional to 90,835.68, 136,204.10 and 31,655.46 is: 47,465.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,835.68 : 136,204.10 = 31,655.46 : x
  2. Step 2: Convert to fraction form
    90,835.68/136,204.10 = 31,655.46/x
  3. Step 3: Cross multiply
    90,835.68x = 136,204.10 × 31,655.46
  4. Step 4: Simplify right side
    90,835.68x = 4,311,603,439.39
  5. Step 5: Solve for x
    x = 4,311,603,439.39/90,835.68
  6. Step 6: Final answer
    x = 47,465.97

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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.