Home / 72,786.08-100,436.64-40,954.29

Finding the Fourth Proportional to 72,786.08, 100,436.64 and 40,954.29

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Solution

The fourth proportional to 72,786.08, 100,436.64 and 40,954.29 is: 56,512.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,786.08 : 100,436.64 = 40,954.29 : x
  2. Step 2: Convert to fraction form
    72,786.08/100,436.64 = 40,954.29/x
  3. Step 3: Cross multiply
    72,786.08x = 100,436.64 × 40,954.29
  4. Step 4: Simplify right side
    72,786.08x = 4,113,311,281.19
  5. Step 5: Solve for x
    x = 4,113,311,281.19/72,786.08
  6. Step 6: Final answer
    x = 56,512.34

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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.