Home / 78,677,449.52-117,948,857.88-30,190,097.84

Finding the Fourth Proportional to 78,677,449.52, 117,948,857.88 and 30,190,097.84

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Solution

The fourth proportional to 78,677,449.52, 117,948,857.88 and 30,190,097.84 is: 45,259,316.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,677,449.52 : 117,948,857.88 = 30,190,097.84 : x
  2. Step 2: Convert to fraction form
    78,677,449.52/117,948,857.88 = 30,190,097.84/x
  3. Step 3: Cross multiply
    78,677,449.52x = 117,948,857.88 × 30,190,097.84
  4. Step 4: Simplify right side
    78,677,449.52x = 3,560,887,559,513,455
  5. Step 5: Solve for x
    x = 3,560,887,559,513,455/78,677,449.52
  6. Step 6: Final answer
    x = 45,259,316.12

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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.