Home / 77,815.61-116,759.86-38,351.20

Finding the Fourth Proportional to 77,815.61, 116,759.86 and 38,351.20

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Solution

The fourth proportional to 77,815.61, 116,759.86 and 38,351.20 is: 57,544.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,815.61 : 116,759.86 = 38,351.20 : x
  2. Step 2: Convert to fraction form
    77,815.61/116,759.86 = 38,351.20/x
  3. Step 3: Cross multiply
    77,815.61x = 116,759.86 × 38,351.20
  4. Step 4: Simplify right side
    77,815.61x = 4,477,880,742.83
  5. Step 5: Solve for x
    x = 4,477,880,742.83/77,815.61
  6. Step 6: Final answer
    x = 57,544.76

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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.