Home / 72,450.76-99,981.78-40,619.64

Finding the Fourth Proportional to 72,450.76, 99,981.78 and 40,619.64

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Solution

The fourth proportional to 72,450.76, 99,981.78 and 40,619.64 is: 56,054.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,450.76 : 99,981.78 = 40,619.64 : x
  2. Step 2: Convert to fraction form
    72,450.76/99,981.78 = 40,619.64/x
  3. Step 3: Cross multiply
    72,450.76x = 99,981.78 × 40,619.64
  4. Step 4: Simplify right side
    72,450.76x = 4,061,223,910.16
  5. Step 5: Solve for x
    x = 4,061,223,910.16/72,450.76
  6. Step 6: Final answer
    x = 56,054.95

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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.