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Finding the Fourth Proportional to 74,653.93, 103,019.34 and 40,662.55

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Solution

The fourth proportional to 74,653.93, 103,019.34 and 40,662.55 is: 56,112.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,653.93 : 103,019.34 = 40,662.55 : x
  2. Step 2: Convert to fraction form
    74,653.93/103,019.34 = 40,662.55/x
  3. Step 3: Cross multiply
    74,653.93x = 103,019.34 × 40,662.55
  4. Step 4: Simplify right side
    74,653.93x = 4,189,029,063.72
  5. Step 5: Solve for x
    x = 4,189,029,063.72/74,653.93
  6. Step 6: Final answer
    x = 56,112.64

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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.