Home / 78,132.41-117,206.85-25,541.81

Finding the Fourth Proportional to 78,132.41, 117,206.85 and 25,541.81

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Solution

The fourth proportional to 78,132.41, 117,206.85 and 25,541.81 is: 38,315.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,132.41 : 117,206.85 = 25,541.81 : x
  2. Step 2: Convert to fraction form
    78,132.41/117,206.85 = 25,541.81/x
  3. Step 3: Cross multiply
    78,132.41x = 117,206.85 × 25,541.81
  4. Step 4: Simplify right side
    78,132.41x = 2,993,675,093.40
  5. Step 5: Solve for x
    x = 2,993,675,093.40/78,132.41
  6. Step 6: Final answer
    x = 38,315.41

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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.