Home / 78,889,679.96-118,334,520.93-21,381,951.09

Finding the Fourth Proportional to 78,889,679.96, 118,334,520.93 and 21,381,951.09

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Solution

The fourth proportional to 78,889,679.96, 118,334,520.93 and 21,381,951.09 is: 32,072,926.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889,679.96 : 118,334,520.93 = 21,381,951.09 : x
  2. Step 2: Convert to fraction form
    78,889,679.96/118,334,520.93 = 21,381,951.09/x
  3. Step 3: Cross multiply
    78,889,679.96x = 118,334,520.93 × 21,381,951.09
  4. Step 4: Simplify right side
    78,889,679.96x = 2,530,222,938,783,841.50
  5. Step 5: Solve for x
    x = 2,530,222,938,783,841.50/78,889,679.96
  6. Step 6: Final answer
    x = 32,072,926.91

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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.