Home / 78,224,022.90-117,512,981.55-54,336,150.90

Finding the Fourth Proportional to 78,224,022.90, 117,512,981.55 and 54,336,150.90

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Solution

The fourth proportional to 78,224,022.90, 117,512,981.55 and 54,336,150.90 is: 81,627,137.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,224,022.90 : 117,512,981.55 = 54,336,150.90 : x
  2. Step 2: Convert to fraction form
    78,224,022.90/117,512,981.55 = 54,336,150.90/x
  3. Step 3: Cross multiply
    78,224,022.90x = 117,512,981.55 × 54,336,150.90
  4. Step 4: Simplify right side
    78,224,022.90x = 6,385,203,098,209,716
  5. Step 5: Solve for x
    x = 6,385,203,098,209,716/78,224,022.90
  6. Step 6: Final answer
    x = 81,627,137.82

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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.