Home / 72,781,203.74-100,438,546.72-39,741,682.28

Finding the Fourth Proportional to 72,781,203.74, 100,438,546.72 and 39,741,682.28

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Solution

The fourth proportional to 72,781,203.74, 100,438,546.72 and 39,741,682.28 is: 54,843,786.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,781,203.74 : 100,438,546.72 = 39,741,682.28 : x
  2. Step 2: Convert to fraction form
    72,781,203.74/100,438,546.72 = 39,741,682.28/x
  3. Step 3: Cross multiply
    72,781,203.74x = 100,438,546.72 × 39,741,682.28
  4. Step 4: Simplify right side
    72,781,203.74x = 3,991,596,812,411,176
  5. Step 5: Solve for x
    x = 3,991,596,812,411,176/72,781,203.74
  6. Step 6: Final answer
    x = 54,843,786.68

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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.