Home / 72,821,987.83-100,495,824.62-39,784,376.80

Finding the Fourth Proportional to 72,821,987.83, 100,495,824.62 and 39,784,376.80

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Solution

The fourth proportional to 72,821,987.83, 100,495,824.62 and 39,784,376.80 is: 54,903,249.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,821,987.83 : 100,495,824.62 = 39,784,376.80 : x
  2. Step 2: Convert to fraction form
    72,821,987.83/100,495,824.62 = 39,784,376.80/x
  3. Step 3: Cross multiply
    72,821,987.83x = 100,495,824.62 × 39,784,376.80
  4. Step 4: Simplify right side
    72,821,987.83x = 3,998,163,753,006,318
  5. Step 5: Solve for x
    x = 3,998,163,753,006,318/72,821,987.83
  6. Step 6: Final answer
    x = 54,903,249.31

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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.