Home / 78,066.24-117,120.48-28,151.88

Finding the Fourth Proportional to 78,066.24, 117,120.48 and 28,151.88

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Solution

The fourth proportional to 78,066.24, 117,120.48 and 28,151.88 is: 42,235.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,066.24 : 117,120.48 = 28,151.88 : x
  2. Step 2: Convert to fraction form
    78,066.24/117,120.48 = 28,151.88/x
  3. Step 3: Cross multiply
    78,066.24x = 117,120.48 × 28,151.88
  4. Step 4: Simplify right side
    78,066.24x = 3,297,161,698.50
  5. Step 5: Solve for x
    x = 3,297,161,698.50/78,066.24
  6. Step 6: Final answer
    x = 42,235.44

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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.