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Finding the Fourth Proportional to 72,322.26, 99,804.87 and 40,492.50

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Solution

The fourth proportional to 72,322.26, 99,804.87 and 40,492.50 is: 55,879.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,322.26 : 99,804.87 = 40,492.50 : x
  2. Step 2: Convert to fraction form
    72,322.26/99,804.87 = 40,492.50/x
  3. Step 3: Cross multiply
    72,322.26x = 99,804.87 × 40,492.50
  4. Step 4: Simplify right side
    72,322.26x = 4,041,348,698.48
  5. Step 5: Solve for x
    x = 4,041,348,698.48/72,322.26
  6. Step 6: Final answer
    x = 55,879.73

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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.