Home / 78,219.14-107,942.68-42,409.19

Finding the Fourth Proportional to 78,219.14, 107,942.68 and 42,409.19

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Solution

The fourth proportional to 78,219.14, 107,942.68 and 42,409.19 is: 58,524.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,219.14 : 107,942.68 = 42,409.19 : x
  2. Step 2: Convert to fraction form
    78,219.14/107,942.68 = 42,409.19/x
  3. Step 3: Cross multiply
    78,219.14x = 107,942.68 × 42,409.19
  4. Step 4: Simplify right side
    78,219.14x = 4,577,761,102.37
  5. Step 5: Solve for x
    x = 4,577,761,102.37/78,219.14
  6. Step 6: Final answer
    x = 58,524.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.