Home / 78,381.41-117,491.58-30,977.24

Finding the Fourth Proportional to 78,381.41, 117,491.58 and 30,977.24

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Solution

The fourth proportional to 78,381.41, 117,491.58 and 30,977.24 is: 46,434.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,381.41 : 117,491.58 = 30,977.24 : x
  2. Step 2: Convert to fraction form
    78,381.41/117,491.58 = 30,977.24/x
  3. Step 3: Cross multiply
    78,381.41x = 117,491.58 × 30,977.24
  4. Step 4: Simplify right side
    78,381.41x = 3,639,564,284.18
  5. Step 5: Solve for x
    x = 3,639,564,284.18/78,381.41
  6. Step 6: Final answer
    x = 46,434.03

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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.