Home / 56,917,917.42-78,546,709.46-30,812,415.90

Finding the Fourth Proportional to 56,917,917.42, 78,546,709.46 and 30,812,415.90

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Solution

The fourth proportional to 56,917,917.42, 78,546,709.46 and 30,812,415.90 is: 42,521,124.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,917,917.42 : 78,546,709.46 = 30,812,415.90 : x
  2. Step 2: Convert to fraction form
    56,917,917.42/78,546,709.46 = 30,812,415.90/x
  3. Step 3: Cross multiply
    56,917,917.42x = 78,546,709.46 × 30,812,415.90
  4. Step 4: Simplify right side
    56,917,917.42x = 2,420,213,879,457,984
  5. Step 5: Solve for x
    x = 2,420,213,879,457,984/56,917,917.42
  6. Step 6: Final answer
    x = 42,521,124.97

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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.