Home / 72,708.54-100,336.34-40,442.46

Finding the Fourth Proportional to 72,708.54, 100,336.34 and 40,442.46

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Solution

The fourth proportional to 72,708.54, 100,336.34 and 40,442.46 is: 55,809.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,708.54 : 100,336.34 = 40,442.46 : x
  2. Step 2: Convert to fraction form
    72,708.54/100,336.34 = 40,442.46/x
  3. Step 3: Cross multiply
    72,708.54x = 100,336.34 × 40,442.46
  4. Step 4: Simplify right side
    72,708.54x = 4,057,848,214.78
  5. Step 5: Solve for x
    x = 4,057,848,214.78/72,708.54
  6. Step 6: Final answer
    x = 55,809.79

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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.