Home / 72,821,989.33-100,495,826.69-39,784,378.30

Finding the Fourth Proportional to 72,821,989.33, 100,495,826.69 and 39,784,378.30

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Solution

The fourth proportional to 72,821,989.33, 100,495,826.69 and 39,784,378.30 is: 54,903,251.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,821,989.33 : 100,495,826.69 = 39,784,378.30 : x
  2. Step 2: Convert to fraction form
    72,821,989.33/100,495,826.69 = 39,784,378.30/x
  3. Step 3: Cross multiply
    72,821,989.33x = 100,495,826.69 × 39,784,378.30
  4. Step 4: Simplify right side
    72,821,989.33x = 3,998,163,986,606,196.50
  5. Step 5: Solve for x
    x = 3,998,163,986,606,196.50/72,821,989.33
  6. Step 6: Final answer
    x = 54,903,251.39

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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.