Home / 78,889,399.18-118,334,096.94-21,381,669.20

Finding the Fourth Proportional to 78,889,399.18, 118,334,096.94 and 21,381,669.20

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Solution

The fourth proportional to 78,889,399.18, 118,334,096.94 and 21,381,669.20 is: 32,072,503.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889,399.18 : 118,334,096.94 = 21,381,669.20 : x
  2. Step 2: Convert to fraction form
    78,889,399.18/118,334,096.94 = 21,381,669.20/x
  3. Step 3: Cross multiply
    78,889,399.18x = 118,334,096.94 × 21,381,669.20
  4. Step 4: Simplify right side
    78,889,399.18x = 2,530,180,515,851,812
  5. Step 5: Solve for x
    x = 2,530,180,515,851,812/78,889,399.18
  6. Step 6: Final answer
    x = 32,072,503.30

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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.