Home / 90,874.18-136,334.04-31,710.34

Finding the Fourth Proportional to 90,874.18, 136,334.04 and 31,710.34

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Solution

The fourth proportional to 90,874.18, 136,334.04 and 31,710.34 is: 47,573.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,874.18 : 136,334.04 = 31,710.34 : x
  2. Step 2: Convert to fraction form
    90,874.18/136,334.04 = 31,710.34/x
  3. Step 3: Cross multiply
    90,874.18x = 136,334.04 × 31,710.34
  4. Step 4: Simplify right side
    90,874.18x = 4,323,198,761.97
  5. Step 5: Solve for x
    x = 4,323,198,761.97/90,874.18
  6. Step 6: Final answer
    x = 47,573.46

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1.5x scale

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.