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Finding the Fourth Proportional to 69,390.84, 104,127.80 and 29,947.98

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Solution

The fourth proportional to 69,390.84, 104,127.80 and 29,947.98 is: 44,939.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,390.84 : 104,127.80 = 29,947.98 : x
  2. Step 2: Convert to fraction form
    69,390.84/104,127.80 = 29,947.98/x
  3. Step 3: Cross multiply
    69,390.84x = 104,127.80 × 29,947.98
  4. Step 4: Simplify right side
    69,390.84x = 3,118,417,271.84
  5. Step 5: Solve for x
    x = 3,118,417,271.84/69,390.84
  6. Step 6: Final answer
    x = 44,939.90

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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.