Home / 78,238.08-117,321.12-48,611.52

Finding the Fourth Proportional to 78,238.08, 117,321.12 and 48,611.52

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Solution

The fourth proportional to 78,238.08, 117,321.12 and 48,611.52 is: 72,894.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,238.08 : 117,321.12 = 48,611.52 : x
  2. Step 2: Convert to fraction form
    78,238.08/117,321.12 = 48,611.52/x
  3. Step 3: Cross multiply
    78,238.08x = 117,321.12 × 48,611.52
  4. Step 4: Simplify right side
    78,238.08x = 5,703,157,971.30
  5. Step 5: Solve for x
    x = 5,703,157,971.30/78,238.08
  6. Step 6: Final answer
    x = 72,894.91

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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.