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Finding the Fourth Proportional to 61,984.80, 92,977.20 and 19,864.80

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Solution

The fourth proportional to 61,984.80, 92,977.20 and 19,864.80 is: 29,797.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,984.80 : 92,977.20 = 19,864.80 : x
  2. Step 2: Convert to fraction form
    61,984.80/92,977.20 = 19,864.80/x
  3. Step 3: Cross multiply
    61,984.80x = 92,977.20 × 19,864.80
  4. Step 4: Simplify right side
    61,984.80x = 1,846,973,482.56
  5. Step 5: Solve for x
    x = 1,846,973,482.56/61,984.80
  6. Step 6: Final answer
    x = 29,797.20

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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.