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Finding the Fourth Proportional to 112,649,487, 168,946,919.72 and 30,768,748.89

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Solution

The fourth proportional to 112,649,487, 168,946,919.72 and 30,768,748.89 is: 46,145,663.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,649,487 : 168,946,919.72 = 30,768,748.89 : x
  2. Step 2: Convert to fraction form
    112,649,487/168,946,919.72 = 30,768,748.89/x
  3. Step 3: Cross multiply
    112,649,487x = 168,946,919.72 × 30,768,748.89
  4. Step 4: Simplify right side
    112,649,487x = 5,198,285,348,603,669
  5. Step 5: Solve for x
    x = 5,198,285,348,603,669/112,649,487
  6. Step 6: Final answer
    x = 46,145,663.75

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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.