Home / 56,804.25-78,390.42-31,311.60

Finding the Fourth Proportional to 56,804.25, 78,390.42 and 31,311.60

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Solution

The fourth proportional to 56,804.25, 78,390.42 and 31,311.60 is: 43,210.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,804.25 : 78,390.42 = 31,311.60 : x
  2. Step 2: Convert to fraction form
    56,804.25/78,390.42 = 31,311.60/x
  3. Step 3: Cross multiply
    56,804.25x = 78,390.42 × 31,311.60
  4. Step 4: Simplify right side
    56,804.25x = 2,454,529,063.49
  5. Step 5: Solve for x
    x = 2,454,529,063.49/56,804.25
  6. Step 6: Final answer
    x = 43,210.30

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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.