Home / 72,637,668.72-100,240,659-40,043,787.12

Finding the Fourth Proportional to 72,637,668.72, 100,240,659 and 40,043,787.12

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Solution

The fourth proportional to 72,637,668.72, 100,240,659 and 40,043,787.12 is: 55,260,798.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,637,668.72 : 100,240,659 = 40,043,787.12 : x
  2. Step 2: Convert to fraction form
    72,637,668.72/100,240,659 = 40,043,787.12/x
  3. Step 3: Cross multiply
    72,637,668.72x = 100,240,659 × 40,043,787.12
  4. Step 4: Simplify right side
    72,637,668.72x = 4,014,015,609,764,512
  5. Step 5: Solve for x
    x = 4,014,015,609,764,512/72,637,668.72
  6. Step 6: Final answer
    x = 55,260,798.98

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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.