Home / 72,539.82-100,105.01-40,708.71

Finding the Fourth Proportional to 72,539.82, 100,105.01 and 40,708.71

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Solution

The fourth proportional to 72,539.82, 100,105.01 and 40,708.71 is: 56,178.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,539.82 : 100,105.01 = 40,708.71 : x
  2. Step 2: Convert to fraction form
    72,539.82/100,105.01 = 40,708.71/x
  3. Step 3: Cross multiply
    72,539.82x = 100,105.01 × 40,708.71
  4. Step 4: Simplify right side
    72,539.82x = 4,075,145,993.49
  5. Step 5: Solve for x
    x = 4,075,145,993.49/72,539.82
  6. Step 6: Final answer
    x = 56,178.05

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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.