Home / 78,889,401.50-118,334,100.41-21,381,671.52

Finding the Fourth Proportional to 78,889,401.50, 118,334,100.41 and 21,381,671.52

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Solution

The fourth proportional to 78,889,401.50, 118,334,100.41 and 21,381,671.52 is: 32,072,506.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889,401.50 : 118,334,100.41 = 21,381,671.52 : x
  2. Step 2: Convert to fraction form
    78,889,401.50/118,334,100.41 = 21,381,671.52/x
  3. Step 3: Cross multiply
    78,889,401.50x = 118,334,100.41 × 21,381,671.52
  4. Step 4: Simplify right side
    78,889,401.50x = 2,530,180,864,474,409
  5. Step 5: Solve for x
    x = 2,530,180,864,474,409/78,889,401.50
  6. Step 6: Final answer
    x = 32,072,506.78

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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.