Home / 78,589,993,218.81-117,904,828,313.74-21,929,808,638.28

Finding the Fourth Proportional to 78,589,993,218.81, 117,904,828,313.74 and 21,929,808,638.28

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Solution

The fourth proportional to 78,589,993,218.81, 117,904,828,313.74 and 21,929,808,638.28 is: 32,900,248,702.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,589,993,218.81 : 117,904,828,313.74 = 21,929,808,638.28 : x
  2. Step 2: Convert to fraction form
    78,589,993,218.81/117,904,828,313.74 = 21,929,808,638.28/x
  3. Step 3: Cross multiply
    78,589,993,218.81x = 117,904,828,313.74 × 21,929,808,638.28
  4. Step 4: Simplify right side
    78,589,993,218.81x = 2,585,630,322,449,575,837,696
  5. Step 5: Solve for x
    x = 2,585,630,322,449,575,837,696/78,589,993,218.81
  6. Step 6: Final answer
    x = 32,900,248,702.79

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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.