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Finding the Fourth Proportional to 72,684.54, 100,262.84 and 45,413.34

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Solution

The fourth proportional to 72,684.54, 100,262.84 and 45,413.34 is: 62,644.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,684.54 : 100,262.84 = 45,413.34 : x
  2. Step 2: Convert to fraction form
    72,684.54/100,262.84 = 45,413.34/x
  3. Step 3: Cross multiply
    72,684.54x = 100,262.84 × 45,413.34
  4. Step 4: Simplify right side
    72,684.54x = 4,553,270,442.29
  5. Step 5: Solve for x
    x = 4,553,270,442.29/72,684.54
  6. Step 6: Final answer
    x = 62,644.28

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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.