Home / 21,054,376,848.08-31,581,321,698.64-5,118,803,739.20

Finding the Fourth Proportional to 21,054,376,848.08, 31,581,321,698.64 and 5,118,803,739.20

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Solution

The fourth proportional to 21,054,376,848.08, 31,581,321,698.64 and 5,118,803,739.20 is: 7,678,146,390.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,054,376,848.08 : 31,581,321,698.64 = 5,118,803,739.20 : x
  2. Step 2: Convert to fraction form
    21,054,376,848.08/31,581,321,698.64 = 5,118,803,739.20/x
  3. Step 3: Cross multiply
    21,054,376,848.08x = 31,581,321,698.64 × 5,118,803,739.20
  4. Step 4: Simplify right side
    21,054,376,848.08x = 161,658,587,599,876,521,984
  5. Step 5: Solve for x
    x = 161,658,587,599,876,521,984/21,054,376,848.08
  6. Step 6: Final answer
    x = 7,678,146,390.48

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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.