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Finding the Fourth Proportional to 72,763.82, 100,413.93 and 40,932.74

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Solution

The fourth proportional to 72,763.82, 100,413.93 and 40,932.74 is: 56,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,763.82 : 100,413.93 = 40,932.74 : x
  2. Step 2: Convert to fraction form
    72,763.82/100,413.93 = 40,932.74/x
  3. Step 3: Cross multiply
    72,763.82x = 100,413.93 × 40,932.74
  4. Step 4: Simplify right side
    72,763.82x = 4,110,217,463.35
  5. Step 5: Solve for x
    x = 4,110,217,463.35/72,763.82
  6. Step 6: Final answer
    x = 56,487.10

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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.