Home / 72,738,101.70-109,107,152.55-69,868,320.30

Finding the Fourth Proportional to 72,738,101.70, 109,107,152.55 and 69,868,320.30

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Solution

The fourth proportional to 72,738,101.70, 109,107,152.55 and 69,868,320.30 is: 104,802,480.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,738,101.70 : 109,107,152.55 = 69,868,320.30 : x
  2. Step 2: Convert to fraction form
    72,738,101.70/109,107,152.55 = 69,868,320.30/x
  3. Step 3: Cross multiply
    72,738,101.70x = 109,107,152.55 × 69,868,320.30
  4. Step 4: Simplify right side
    72,738,101.70x = 7,623,133,481,384,361
  5. Step 5: Solve for x
    x = 7,623,133,481,384,361/72,738,101.70
  6. Step 6: Final answer
    x = 104,802,480.45

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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.