Home / 72,725,893.44-100,363,865.87-39,688,275.71

Finding the Fourth Proportional to 72,725,893.44, 100,363,865.87 and 39,688,275.71

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Solution

The fourth proportional to 72,725,893.44, 100,363,865.87 and 39,688,275.71 is: 54,770,984.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,725,893.44 : 100,363,865.87 = 39,688,275.71 : x
  2. Step 2: Convert to fraction form
    72,725,893.44/100,363,865.87 = 39,688,275.71/x
  3. Step 3: Cross multiply
    72,725,893.44x = 100,363,865.87 × 39,688,275.71
  4. Step 4: Simplify right side
    72,725,893.44x = 3,983,268,780,320,149.50
  5. Step 5: Solve for x
    x = 3,983,268,780,320,149.50/72,725,893.44
  6. Step 6: Final answer
    x = 54,770,984.47

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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.