Home / 78,589,993,225.32-117,904,828,323.51-21,929,808,644.79

Finding the Fourth Proportional to 78,589,993,225.32, 117,904,828,323.51 and 21,929,808,644.79

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Solution

The fourth proportional to 78,589,993,225.32, 117,904,828,323.51 and 21,929,808,644.79 is: 32,900,248,712.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,589,993,225.32 : 117,904,828,323.51 = 21,929,808,644.79 : x
  2. Step 2: Convert to fraction form
    78,589,993,225.32/117,904,828,323.51 = 21,929,808,644.79/x
  3. Step 3: Cross multiply
    78,589,993,225.32x = 117,904,828,323.51 × 21,929,808,644.79
  4. Step 4: Simplify right side
    78,589,993,225.32x = 2,585,630,323,431,390,576,640
  5. Step 5: Solve for x
    x = 2,585,630,323,431,390,576,640/78,589,993,225.32
  6. Step 6: Final answer
    x = 32,900,248,712.56

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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.