Home / 78,186.83-117,285.53-38,733.35

Finding the Fourth Proportional to 78,186.83, 117,285.53 and 38,733.35

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Solution

The fourth proportional to 78,186.83, 117,285.53 and 38,733.35 is: 58,102.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,186.83 : 117,285.53 = 38,733.35 : x
  2. Step 2: Convert to fraction form
    78,186.83/117,285.53 = 38,733.35/x
  3. Step 3: Cross multiply
    78,186.83x = 117,285.53 × 38,733.35
  4. Step 4: Simplify right side
    78,186.83x = 4,542,860,703.33
  5. Step 5: Solve for x
    x = 4,542,860,703.33/78,186.83
  6. Step 6: Final answer
    x = 58,102.64

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1.5x scale

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.