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Finding the Fourth Proportional to 66,170.76, 99,271.49 and 21,795.92

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Solution

The fourth proportional to 66,170.76, 99,271.49 and 21,795.92 is: 32,698.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,170.76 : 99,271.49 = 21,795.92 : x
  2. Step 2: Convert to fraction form
    66,170.76/99,271.49 = 21,795.92/x
  3. Step 3: Cross multiply
    66,170.76x = 99,271.49 × 21,795.92
  4. Step 4: Simplify right side
    66,170.76x = 2,163,712,848.98
  5. Step 5: Solve for x
    x = 2,163,712,848.98/66,170.76
  6. Step 6: Final answer
    x = 32,698.93

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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.