Home / 72,775,478.57-100,431,558.77-39,737,037.16

Finding the Fourth Proportional to 72,775,478.57, 100,431,558.77 and 39,737,037.16

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Solution

The fourth proportional to 72,775,478.57, 100,431,558.77 and 39,737,037.16 is: 54,837,874.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,775,478.57 : 100,431,558.77 = 39,737,037.16 : x
  2. Step 2: Convert to fraction form
    72,775,478.57/100,431,558.77 = 39,737,037.16/x
  3. Step 3: Cross multiply
    72,775,478.57x = 100,431,558.77 × 39,737,037.16
  4. Step 4: Simplify right side
    72,775,478.57x = 3,990,852,582,465,463
  5. Step 5: Solve for x
    x = 3,990,852,582,465,463/72,775,478.57
  6. Step 6: Final answer
    x = 54,837,874.81

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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.