Home / 78,621,806.60-117,932,709.90-40,358,054.60

Finding the Fourth Proportional to 78,621,806.60, 117,932,709.90 and 40,358,054.60

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Solution

The fourth proportional to 78,621,806.60, 117,932,709.90 and 40,358,054.60 is: 60,537,081.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,621,806.60 : 117,932,709.90 = 40,358,054.60 : x
  2. Step 2: Convert to fraction form
    78,621,806.60/117,932,709.90 = 40,358,054.60/x
  3. Step 3: Cross multiply
    78,621,806.60x = 117,932,709.90 × 40,358,054.60
  4. Step 4: Simplify right side
    78,621,806.60x = 4,759,534,745,270,161
  5. Step 5: Solve for x
    x = 4,759,534,745,270,161/78,621,806.60
  6. Step 6: Final answer
    x = 60,537,081.90

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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.