Home / 43,178,976.12-64,786,366.26-18,905,374.20

Finding the Fourth Proportional to 43,178,976.12, 64,786,366.26 and 18,905,374.20

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Solution

The fourth proportional to 43,178,976.12, 64,786,366.26 and 18,905,374.20 is: 28,365,899.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,178,976.12 : 64,786,366.26 = 18,905,374.20 : x
  2. Step 2: Convert to fraction form
    43,178,976.12/64,786,366.26 = 18,905,374.20/x
  3. Step 3: Cross multiply
    43,178,976.12x = 64,786,366.26 × 18,905,374.20
  4. Step 4: Simplify right side
    43,178,976.12x = 1,224,810,497,203,554.50
  5. Step 5: Solve for x
    x = 1,224,810,497,203,554.50/43,178,976.12
  6. Step 6: Final answer
    x = 28,365,899.50

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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.