Home / 72,171,117.40-99,589,983.42-40,807,629.40

Finding the Fourth Proportional to 72,171,117.40, 99,589,983.42 and 40,807,629.40

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Solution

The fourth proportional to 72,171,117.40, 99,589,983.42 and 40,807,629.40 is: 56,311,046.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,171,117.40 : 99,589,983.42 = 40,807,629.40 : x
  2. Step 2: Convert to fraction form
    72,171,117.40/99,589,983.42 = 40,807,629.40/x
  3. Step 3: Cross multiply
    72,171,117.40x = 99,589,983.42 × 40,807,629.40
  4. Step 4: Simplify right side
    72,171,117.40x = 4,064,031,135,355,504.50
  5. Step 5: Solve for x
    x = 4,064,031,135,355,504.50/72,171,117.40
  6. Step 6: Final answer
    x = 56,311,046.33

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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.