Home / 78,589,993,217.81-117,904,828,312.24-21,929,808,637.28

Finding the Fourth Proportional to 78,589,993,217.81, 117,904,828,312.24 and 21,929,808,637.28

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Solution

The fourth proportional to 78,589,993,217.81, 117,904,828,312.24 and 21,929,808,637.28 is: 32,900,248,701.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,589,993,217.81 : 117,904,828,312.24 = 21,929,808,637.28 : x
  2. Step 2: Convert to fraction form
    78,589,993,217.81/117,904,828,312.24 = 21,929,808,637.28/x
  3. Step 3: Cross multiply
    78,589,993,217.81x = 117,904,828,312.24 × 21,929,808,637.28
  4. Step 4: Simplify right side
    78,589,993,217.81x = 2,585,630,322,299,012,382,720
  5. Step 5: Solve for x
    x = 2,585,630,322,299,012,382,720/78,589,993,217.81
  6. Step 6: Final answer
    x = 32,900,248,701.30

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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.