Home / 69,971.04-105,000.30-28,418.04

Finding the Fourth Proportional to 69,971.04, 105,000.30 and 28,418.04

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Solution

The fourth proportional to 69,971.04, 105,000.30 and 28,418.04 is: 42,644.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,971.04 : 105,000.30 = 28,418.04 : x
  2. Step 2: Convert to fraction form
    69,971.04/105,000.30 = 28,418.04/x
  3. Step 3: Cross multiply
    69,971.04x = 105,000.30 × 28,418.04
  4. Step 4: Simplify right side
    69,971.04x = 2,983,902,725.41
  5. Step 5: Solve for x
    x = 2,983,902,725.41/69,971.04
  6. Step 6: Final answer
    x = 42,644.82

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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.