Home / 72,983,880.31-100,718,021.65-39,493,359.54

Finding the Fourth Proportional to 72,983,880.31, 100,718,021.65 and 39,493,359.54

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Solution

The fourth proportional to 72,983,880.31, 100,718,021.65 and 39,493,359.54 is: 54,500,980.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,983,880.31 : 100,718,021.65 = 39,493,359.54 : x
  2. Step 2: Convert to fraction form
    72,983,880.31/100,718,021.65 = 39,493,359.54/x
  3. Step 3: Cross multiply
    72,983,880.31x = 100,718,021.65 × 39,493,359.54
  4. Step 4: Simplify right side
    72,983,880.31x = 3,977,693,041,180,954
  5. Step 5: Solve for x
    x = 3,977,693,041,180,954/72,983,880.31
  6. Step 6: Final answer
    x = 54,500,980.55

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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.