Home / 74,119.54-102,285.76-40,128.73

Finding the Fourth Proportional to 74,119.54, 102,285.76 and 40,128.73

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Solution

The fourth proportional to 74,119.54, 102,285.76 and 40,128.73 is: 55,378.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,119.54 : 102,285.76 = 40,128.73 : x
  2. Step 2: Convert to fraction form
    74,119.54/102,285.76 = 40,128.73/x
  3. Step 3: Cross multiply
    74,119.54x = 102,285.76 × 40,128.73
  4. Step 4: Simplify right side
    74,119.54x = 4,104,597,445.24
  5. Step 5: Solve for x
    x = 4,104,597,445.24/74,119.54
  6. Step 6: Final answer
    x = 55,378.08

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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.