Home / 72,824.08-100,506.80-40,999.20

Finding the Fourth Proportional to 72,824.08, 100,506.80 and 40,999.20

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Solution

The fourth proportional to 72,824.08, 100,506.80 and 40,999.20 is: 56,584.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,824.08 : 100,506.80 = 40,999.20 : x
  2. Step 2: Convert to fraction form
    72,824.08/100,506.80 = 40,999.20/x
  3. Step 3: Cross multiply
    72,824.08x = 100,506.80 × 40,999.20
  4. Step 4: Simplify right side
    72,824.08x = 4,120,698,394.56
  5. Step 5: Solve for x
    x = 4,120,698,394.56/72,824.08
  6. Step 6: Final answer
    x = 56,584.28

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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.