Home / 72,457,215.90-108,673,620.38-20,638,175.46

Finding the Fourth Proportional to 72,457,215.90, 108,673,620.38 and 20,638,175.46

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Solution

The fourth proportional to 72,457,215.90, 108,673,620.38 and 20,638,175.46 is: 30,953,787.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,457,215.90 : 108,673,620.38 = 20,638,175.46 : x
  2. Step 2: Convert to fraction form
    72,457,215.90/108,673,620.38 = 20,638,175.46/x
  3. Step 3: Cross multiply
    72,457,215.90x = 108,673,620.38 × 20,638,175.46
  4. Step 4: Simplify right side
    72,457,215.90x = 2,242,825,245,172,681
  5. Step 5: Solve for x
    x = 2,242,825,245,172,681/72,457,215.90
  6. Step 6: Final answer
    x = 30,953,787.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.