Home / 78,325.45-117,492.74-22,160.86

Finding the Fourth Proportional to 78,325.45, 117,492.74 and 22,160.86

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Solution

The fourth proportional to 78,325.45, 117,492.74 and 22,160.86 is: 33,242.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,325.45 : 117,492.74 = 22,160.86 : x
  2. Step 2: Convert to fraction form
    78,325.45/117,492.74 = 22,160.86/x
  3. Step 3: Cross multiply
    78,325.45x = 117,492.74 × 22,160.86
  4. Step 4: Simplify right side
    78,325.45x = 2,603,739,730.57
  5. Step 5: Solve for x
    x = 2,603,739,730.57/78,325.45
  6. Step 6: Final answer
    x = 33,242.58

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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.