Home / 74,739.54-103,145.70-45,680.38

Finding the Fourth Proportional to 74,739.54, 103,145.70 and 45,680.38

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Solution

The fourth proportional to 74,739.54, 103,145.70 and 45,680.38 is: 63,042.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,739.54 : 103,145.70 = 45,680.38 : x
  2. Step 2: Convert to fraction form
    74,739.54/103,145.70 = 45,680.38/x
  3. Step 3: Cross multiply
    74,739.54x = 103,145.70 × 45,680.38
  4. Step 4: Simplify right side
    74,739.54x = 4,711,734,771.37
  5. Step 5: Solve for x
    x = 4,711,734,771.37/74,739.54
  6. Step 6: Final answer
    x = 63,042.06

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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.