Home / 72,829.09-100,506.05-40,999.15

Finding the Fourth Proportional to 72,829.09, 100,506.05 and 40,999.15

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Solution

The fourth proportional to 72,829.09, 100,506.05 and 40,999.15 is: 56,579.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,829.09 : 100,506.05 = 40,999.15 : x
  2. Step 2: Convert to fraction form
    72,829.09/100,506.05 = 40,999.15/x
  3. Step 3: Cross multiply
    72,829.09x = 100,506.05 × 40,999.15
  4. Step 4: Simplify right side
    72,829.09x = 4,120,662,619.86
  5. Step 5: Solve for x
    x = 4,120,662,619.86/72,829.09
  6. Step 6: Final answer
    x = 56,579.90

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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.