Home / 39,279,409.80-54,203,454.29-21,634,879.70

Finding the Fourth Proportional to 39,279,409.80, 54,203,454.29 and 21,634,879.70

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Solution

The fourth proportional to 39,279,409.80, 54,203,454.29 and 21,634,879.70 is: 29,854,960.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,279,409.80 : 54,203,454.29 = 21,634,879.70 : x
  2. Step 2: Convert to fraction form
    39,279,409.80/54,203,454.29 = 21,634,879.70/x
  3. Step 3: Cross multiply
    39,279,409.80x = 54,203,454.29 × 21,634,879.70
  4. Step 4: Simplify right side
    39,279,409.80x = 1,172,685,212,509,407.25
  5. Step 5: Solve for x
    x = 1,172,685,212,509,407.25/39,279,409.80
  6. Step 6: Final answer
    x = 29,854,960.10

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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.