Home / 70,619.03-105,944.85-20,702.98

Finding the Fourth Proportional to 70,619.03, 105,944.85 and 20,702.98

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Solution

The fourth proportional to 70,619.03, 105,944.85 and 20,702.98 is: 31,059.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,619.03 : 105,944.85 = 20,702.98 : x
  2. Step 2: Convert to fraction form
    70,619.03/105,944.85 = 20,702.98/x
  3. Step 3: Cross multiply
    70,619.03x = 105,944.85 × 20,702.98
  4. Step 4: Simplify right side
    70,619.03x = 2,193,374,007.14
  5. Step 5: Solve for x
    x = 2,193,374,007.14/70,619.03
  6. Step 6: Final answer
    x = 31,059.25

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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.