Home / 72,969,129.77-100,697,395.91-39,929,381.65

Finding the Fourth Proportional to 72,969,129.77, 100,697,395.91 and 39,929,381.65

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Solution

The fourth proportional to 72,969,129.77, 100,697,395.91 and 39,929,381.65 is: 55,102,544.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,969,129.77 : 100,697,395.91 = 39,929,381.65 : x
  2. Step 2: Convert to fraction form
    72,969,129.77/100,697,395.91 = 39,929,381.65/x
  3. Step 3: Cross multiply
    72,969,129.77x = 100,697,395.91 × 39,929,381.65
  4. Step 4: Simplify right side
    72,969,129.77x = 4,020,784,752,036,244.50
  5. Step 5: Solve for x
    x = 4,020,784,752,036,244.50/72,969,129.77
  6. Step 6: Final answer
    x = 55,102,544.93

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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.