Home / 40,090,729.87-55,325,242.65-21,756,015.37

Finding the Fourth Proportional to 40,090,729.87, 55,325,242.65 and 21,756,015.37

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Solution

The fourth proportional to 40,090,729.87, 55,325,242.65 and 21,756,015.37 is: 30,023,320.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,090,729.87 : 55,325,242.65 = 21,756,015.37 : x
  2. Step 2: Convert to fraction form
    40,090,729.87/55,325,242.65 = 21,756,015.37/x
  3. Step 3: Cross multiply
    40,090,729.87x = 55,325,242.65 × 21,756,015.37
  4. Step 4: Simplify right side
    40,090,729.87x = 1,203,656,829,442,379.50
  5. Step 5: Solve for x
    x = 1,203,656,829,442,379.50/40,090,729.87
  6. Step 6: Final answer
    x = 30,023,320.44

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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.