Home / 72,983,893.89-100,718,040.48-39,493,373.28

Finding the Fourth Proportional to 72,983,893.89, 100,718,040.48 and 39,493,373.28

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Solution

The fourth proportional to 72,983,893.89, 100,718,040.48 and 39,493,373.28 is: 54,500,999.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,983,893.89 : 100,718,040.48 = 39,493,373.28 : x
  2. Step 2: Convert to fraction form
    72,983,893.89/100,718,040.48 = 39,493,373.28/x
  3. Step 3: Cross multiply
    72,983,893.89x = 100,718,040.48 × 39,493,373.28
  4. Step 4: Simplify right side
    72,983,893.89x = 3,977,695,168,706,790.50
  5. Step 5: Solve for x
    x = 3,977,695,168,706,790.50/72,983,893.89
  6. Step 6: Final answer
    x = 54,500,999.56

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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.