Home / 90,708.45-136,074.99-31,536.46

Finding the Fourth Proportional to 90,708.45, 136,074.99 and 31,536.46

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Solution

The fourth proportional to 90,708.45, 136,074.99 and 31,536.46 is: 47,308.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,708.45 : 136,074.99 = 31,536.46 : x
  2. Step 2: Convert to fraction form
    90,708.45/136,074.99 = 31,536.46/x
  3. Step 3: Cross multiply
    90,708.45x = 136,074.99 × 31,536.46
  4. Step 4: Simplify right side
    90,708.45x = 4,291,323,819.32
  5. Step 5: Solve for x
    x = 4,291,323,819.32/90,708.45
  6. Step 6: Final answer
    x = 47,308.98

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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.