Home / 78,449.42-117,668.73-45,144.92

Finding the Fourth Proportional to 78,449.42, 117,668.73 and 45,144.92

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Solution

The fourth proportional to 78,449.42, 117,668.73 and 45,144.92 is: 67,714.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,449.42 : 117,668.73 = 45,144.92 : x
  2. Step 2: Convert to fraction form
    78,449.42/117,668.73 = 45,144.92/x
  3. Step 3: Cross multiply
    78,449.42x = 117,668.73 × 45,144.92
  4. Step 4: Simplify right side
    78,449.42x = 5,312,145,402.35
  5. Step 5: Solve for x
    x = 5,312,145,402.35/78,449.42
  6. Step 6: Final answer
    x = 67,714.27

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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.