Home / 72,300,919.80-99,775,155.60-39,705,871.80

Finding the Fourth Proportional to 72,300,919.80, 99,775,155.60 and 39,705,871.80

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Solution

The fourth proportional to 72,300,919.80, 99,775,155.60 and 39,705,871.80 is: 54,794,040.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,300,919.80 : 99,775,155.60 = 39,705,871.80 : x
  2. Step 2: Convert to fraction form
    72,300,919.80/99,775,155.60 = 39,705,871.80/x
  3. Step 3: Cross multiply
    72,300,919.80x = 99,775,155.60 × 39,705,871.80
  4. Step 4: Simplify right side
    72,300,919.80x = 3,961,659,537,078,651.50
  5. Step 5: Solve for x
    x = 3,961,659,537,078,651.50/72,300,919.80
  6. Step 6: Final answer
    x = 54,794,040.63

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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.