Home / 78,889,479.86-118,334,217.97-21,381,749.89

Finding the Fourth Proportional to 78,889,479.86, 118,334,217.97 and 21,381,749.89

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Solution

The fourth proportional to 78,889,479.86, 118,334,217.97 and 21,381,749.89 is: 32,072,624.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889,479.86 : 118,334,217.97 = 21,381,749.89 : x
  2. Step 2: Convert to fraction form
    78,889,479.86/118,334,217.97 = 21,381,749.89/x
  3. Step 3: Cross multiply
    78,889,479.86x = 118,334,217.97 × 21,381,749.89
  4. Step 4: Simplify right side
    78,889,479.86x = 2,530,192,651,794,175
  5. Step 5: Solve for x
    x = 2,530,192,651,794,175/78,889,479.86
  6. Step 6: Final answer
    x = 32,072,624.34

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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.