Home / 78,268,147,873.24-117,393,429,920.32-21,616,064,728.12

Finding the Fourth Proportional to 78,268,147,873.24, 117,393,429,920.32 and 21,616,064,728.12

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Solution

The fourth proportional to 78,268,147,873.24, 117,393,429,920.32 and 21,616,064,728.12 is: 32,421,668,951.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,268,147,873.24 : 117,393,429,920.32 = 21,616,064,728.12 : x
  2. Step 2: Convert to fraction form
    78,268,147,873.24/117,393,429,920.32 = 21,616,064,728.12/x
  3. Step 3: Cross multiply
    78,268,147,873.24x = 117,393,429,920.32 × 21,616,064,728.12
  4. Step 4: Simplify right side
    78,268,147,873.24x = 2,537,583,979,813,656,330,240
  5. Step 5: Solve for x
    x = 2,537,583,979,813,656,330,240/78,268,147,873.24
  6. Step 6: Final answer
    x = 32,421,668,951.76

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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.