Home / 57,190.10-78,920.04-31,696.88

Finding the Fourth Proportional to 57,190.10, 78,920.04 and 31,696.88

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Solution

The fourth proportional to 57,190.10, 78,920.04 and 31,696.88 is: 43,740.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,190.10 : 78,920.04 = 31,696.88 : x
  2. Step 2: Convert to fraction form
    57,190.10/78,920.04 = 31,696.88/x
  3. Step 3: Cross multiply
    57,190.10x = 78,920.04 × 31,696.88
  4. Step 4: Simplify right side
    57,190.10x = 2,501,519,037.48
  5. Step 5: Solve for x
    x = 2,501,519,037.48/57,190.10
  6. Step 6: Final answer
    x = 43,740.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.