Home / 90,860.34-136,313.19-31,696.50

Finding the Fourth Proportional to 90,860.34, 136,313.19 and 31,696.50

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Solution

The fourth proportional to 90,860.34, 136,313.19 and 31,696.50 is: 47,552.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,860.34 : 136,313.19 = 31,696.50 : x
  2. Step 2: Convert to fraction form
    90,860.34/136,313.19 = 31,696.50/x
  3. Step 3: Cross multiply
    90,860.34x = 136,313.19 × 31,696.50
  4. Step 4: Simplify right side
    90,860.34x = 4,320,651,026.84
  5. Step 5: Solve for x
    x = 4,320,651,026.84/90,860.34
  6. Step 6: Final answer
    x = 47,552.66

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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.