Home / 77,779.77-116,643.71-30,382.58

Finding the Fourth Proportional to 77,779.77, 116,643.71 and 30,382.58

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Solution

The fourth proportional to 77,779.77, 116,643.71 and 30,382.58 is: 45,563.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,779.77 : 116,643.71 = 30,382.58 : x
  2. Step 2: Convert to fraction form
    77,779.77/116,643.71 = 30,382.58/x
  3. Step 3: Cross multiply
    77,779.77x = 116,643.71 × 30,382.58
  4. Step 4: Simplify right side
    77,779.77x = 3,543,936,850.57
  5. Step 5: Solve for x
    x = 3,543,936,850.57/77,779.77
  6. Step 6: Final answer
    x = 45,563.74

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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.