Home / 78,282.45-117,317.43-36,069.57

Finding the Fourth Proportional to 78,282.45, 117,317.43 and 36,069.57

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Solution

The fourth proportional to 78,282.45, 117,317.43 and 36,069.57 is: 54,055.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,282.45 : 117,317.43 = 36,069.57 : x
  2. Step 2: Convert to fraction form
    78,282.45/117,317.43 = 36,069.57/x
  3. Step 3: Cross multiply
    78,282.45x = 117,317.43 × 36,069.57
  4. Step 4: Simplify right side
    78,282.45x = 4,231,589,253.61
  5. Step 5: Solve for x
    x = 4,231,589,253.61/78,282.45
  6. Step 6: Final answer
    x = 54,055.40

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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.