Home / 72,775,405.14-100,429,297.40-39,735,551.87

Finding the Fourth Proportional to 72,775,405.14, 100,429,297.40 and 39,735,551.87

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Solution

The fourth proportional to 72,775,405.14, 100,429,297.40 and 39,735,551.87 is: 54,834,645.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,775,405.14 : 100,429,297.40 = 39,735,551.87 : x
  2. Step 2: Convert to fraction form
    72,775,405.14/100,429,297.40 = 39,735,551.87/x
  3. Step 3: Cross multiply
    72,775,405.14x = 100,429,297.40 × 39,735,551.87
  4. Step 4: Simplify right side
    72,775,405.14x = 3,990,613,555,603,210
  5. Step 5: Solve for x
    x = 3,990,613,555,603,210/72,775,405.14
  6. Step 6: Final answer
    x = 54,834,645.69

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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.