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Finding the Fourth Proportional to 27,571,415.75, 37,978,483.20 and 21,033,695.01

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Solution

The fourth proportional to 27,571,415.75, 37,978,483.20 and 21,033,695.01 is: 28,973,043.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,571,415.75 : 37,978,483.20 = 21,033,695.01 : x
  2. Step 2: Convert to fraction form
    27,571,415.75/37,978,483.20 = 21,033,695.01/x
  3. Step 3: Cross multiply
    27,571,415.75x = 37,978,483.20 × 21,033,695.01
  4. Step 4: Simplify right side
    27,571,415.75x = 798,827,832,634,751.88
  5. Step 5: Solve for x
    x = 798,827,832,634,751.88/27,571,415.75
  6. Step 6: Final answer
    x = 28,973,043.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.