Home / 78,889,401.43-118,334,100.32-21,381,671.45

Finding the Fourth Proportional to 78,889,401.43, 118,334,100.32 and 21,381,671.45

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Solution

The fourth proportional to 78,889,401.43, 118,334,100.32 and 21,381,671.45 is: 32,072,506.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889,401.43 : 118,334,100.32 = 21,381,671.45 : x
  2. Step 2: Convert to fraction form
    78,889,401.43/118,334,100.32 = 21,381,671.45/x
  3. Step 3: Cross multiply
    78,889,401.43x = 118,334,100.32 × 21,381,671.45
  4. Step 4: Simplify right side
    78,889,401.43x = 2,530,180,854,373,579.50
  5. Step 5: Solve for x
    x = 2,530,180,854,373,579.50/78,889,401.43
  6. Step 6: Final answer
    x = 32,072,506.68

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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.