Home / 78,286,591,135.68-117,381,828,078.48-30,423,714,942.60

Finding the Fourth Proportional to 78,286,591,135.68, 117,381,828,078.48 and 30,423,714,942.60

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Solution

The fourth proportional to 78,286,591,135.68, 117,381,828,078.48 and 30,423,714,942.60 is: 45,616,895,883.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,286,591,135.68 : 117,381,828,078.48 = 30,423,714,942.60 : x
  2. Step 2: Convert to fraction form
    78,286,591,135.68/117,381,828,078.48 = 30,423,714,942.60/x
  3. Step 3: Cross multiply
    78,286,591,135.68x = 117,381,828,078.48 × 30,423,714,942.60
  4. Step 4: Simplify right side
    78,286,591,135.68x = 3,571,191,276,900,955,717,632
  5. Step 5: Solve for x
    x = 3,571,191,276,900,955,717,632/78,286,591,135.68
  6. Step 6: Final answer
    x = 45,616,895,883.38

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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.