Home / 74,084,921.20-111,127,381.80-72,667,745.20

Finding the Fourth Proportional to 74,084,921.20, 111,127,381.80 and 72,667,745.20

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Solution

The fourth proportional to 74,084,921.20, 111,127,381.80 and 72,667,745.20 is: 109,001,617.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,084,921.20 : 111,127,381.80 = 72,667,745.20 : x
  2. Step 2: Convert to fraction form
    74,084,921.20/111,127,381.80 = 72,667,745.20/x
  3. Step 3: Cross multiply
    74,084,921.20x = 111,127,381.80 × 72,667,745.20
  4. Step 4: Simplify right side
    74,084,921.20x = 8,075,376,265,385,517
  5. Step 5: Solve for x
    x = 8,075,376,265,385,517/74,084,921.20
  6. Step 6: Final answer
    x = 109,001,617.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.