Home / 57,210.36-78,949-31,716.60

Finding the Fourth Proportional to 57,210.36, 78,949 and 31,716.60

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Solution

The fourth proportional to 57,210.36, 78,949 and 31,716.60 is: 43,768.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,210.36 : 78,949 = 31,716.60 : x
  2. Step 2: Convert to fraction form
    57,210.36/78,949 = 31,716.60/x
  3. Step 3: Cross multiply
    57,210.36x = 78,949 × 31,716.60
  4. Step 4: Simplify right side
    57,210.36x = 2,503,993,853.40
  5. Step 5: Solve for x
    x = 2,503,993,853.40/57,210.36
  6. Step 6: Final answer
    x = 43,768.19

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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.