Home / 55,956.18-77,219.55-30,805.50

Finding the Fourth Proportional to 55,956.18, 77,219.55 and 30,805.50

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Solution

The fourth proportional to 55,956.18, 77,219.55 and 30,805.50 is: 42,511.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,956.18 : 77,219.55 = 30,805.50 : x
  2. Step 2: Convert to fraction form
    55,956.18/77,219.55 = 30,805.50/x
  3. Step 3: Cross multiply
    55,956.18x = 77,219.55 × 30,805.50
  4. Step 4: Simplify right side
    55,956.18x = 2,378,786,847.53
  5. Step 5: Solve for x
    x = 2,378,786,847.53/55,956.18
  6. Step 6: Final answer
    x = 42,511.60

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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.