Home / 74,212.15-102,414-40,221.72

Finding the Fourth Proportional to 74,212.15, 102,414 and 40,221.72

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Solution

The fourth proportional to 74,212.15, 102,414 and 40,221.72 is: 55,506.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,212.15 : 102,414 = 40,221.72 : x
  2. Step 2: Convert to fraction form
    74,212.15/102,414 = 40,221.72/x
  3. Step 3: Cross multiply
    74,212.15x = 102,414 × 40,221.72
  4. Step 4: Simplify right side
    74,212.15x = 4,119,267,232.08
  5. Step 5: Solve for x
    x = 4,119,267,232.08/74,212.15
  6. Step 6: Final answer
    x = 55,506.64

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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.