Home / 72,769,160.89-100,420,922.10-39,729,408.94

Finding the Fourth Proportional to 72,769,160.89, 100,420,922.10 and 39,729,408.94

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Solution

The fourth proportional to 72,769,160.89, 100,420,922.10 and 39,729,408.94 is: 54,826,300.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,769,160.89 : 100,420,922.10 = 39,729,408.94 : x
  2. Step 2: Convert to fraction form
    72,769,160.89/100,420,922.10 = 39,729,408.94/x
  3. Step 3: Cross multiply
    72,769,160.89x = 100,420,922.10 × 39,729,408.94
  4. Step 4: Simplify right side
    72,769,160.89x = 3,989,663,880,242,783
  5. Step 5: Solve for x
    x = 3,989,663,880,242,783/72,769,160.89
  6. Step 6: Final answer
    x = 54,826,300.47

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1.5x scale

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.