Home / 78,266,774.80-117,400,162.20-49,167,427.60

Finding the Fourth Proportional to 78,266,774.80, 117,400,162.20 and 49,167,427.60

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Solution

The fourth proportional to 78,266,774.80, 117,400,162.20 and 49,167,427.60 is: 73,751,141.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,266,774.80 : 117,400,162.20 = 49,167,427.60 : x
  2. Step 2: Convert to fraction form
    78,266,774.80/117,400,162.20 = 49,167,427.60/x
  3. Step 3: Cross multiply
    78,266,774.80x = 117,400,162.20 × 49,167,427.60
  4. Step 4: Simplify right side
    78,266,774.80x = 5,772,263,975,196,757
  5. Step 5: Solve for x
    x = 5,772,263,975,196,757/78,266,774.80
  6. Step 6: Final answer
    x = 73,751,141.40

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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.