Home / 72,825.36-109,280.48-30,702.84

Finding the Fourth Proportional to 72,825.36, 109,280.48 and 30,702.84

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Solution

The fourth proportional to 72,825.36, 109,280.48 and 30,702.84 is: 46,072.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,825.36 : 109,280.48 = 30,702.84 : x
  2. Step 2: Convert to fraction form
    72,825.36/109,280.48 = 30,702.84/x
  3. Step 3: Cross multiply
    72,825.36x = 109,280.48 × 30,702.84
  4. Step 4: Simplify right side
    72,825.36x = 3,355,221,092.56
  5. Step 5: Solve for x
    x = 3,355,221,092.56/72,825.36
  6. Step 6: Final answer
    x = 46,072.15

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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.