Home / 72,321,218.24-99,804,013.44-39,282,112.48

Finding the Fourth Proportional to 72,321,218.24, 99,804,013.44 and 39,282,112.48

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Solution

The fourth proportional to 72,321,218.24, 99,804,013.44 and 39,282,112.48 is: 54,209,712.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,321,218.24 : 99,804,013.44 = 39,282,112.48 : x
  2. Step 2: Convert to fraction form
    72,321,218.24/99,804,013.44 = 39,282,112.48/x
  3. Step 3: Cross multiply
    72,321,218.24x = 99,804,013.44 × 39,282,112.48
  4. Step 4: Simplify right side
    72,321,218.24x = 3,920,512,481,905,511.50
  5. Step 5: Solve for x
    x = 3,920,512,481,905,511.50/72,321,218.24
  6. Step 6: Final answer
    x = 54,209,712.96

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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.