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Finding the Fourth Proportional to 73,009.47, 100,729.47 and 40,738.87

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Solution

The fourth proportional to 73,009.47, 100,729.47 and 40,738.87 is: 56,206.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,009.47 : 100,729.47 = 40,738.87 : x
  2. Step 2: Convert to fraction form
    73,009.47/100,729.47 = 40,738.87/x
  3. Step 3: Cross multiply
    73,009.47x = 100,729.47 × 40,738.87
  4. Step 4: Simplify right side
    73,009.47x = 4,103,604,783.50
  5. Step 5: Solve for x
    x = 4,103,604,783.50/73,009.47
  6. Step 6: Final answer
    x = 56,206.47

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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.