Home / 78,089.20-117,116.25-35,928.84

Finding the Fourth Proportional to 78,089.20, 117,116.25 and 35,928.84

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Solution

The fourth proportional to 78,089.20, 117,116.25 and 35,928.84 is: 53,885.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,089.20 : 117,116.25 = 35,928.84 : x
  2. Step 2: Convert to fraction form
    78,089.20/117,116.25 = 35,928.84/x
  3. Step 3: Cross multiply
    78,089.20x = 117,116.25 × 35,928.84
  4. Step 4: Simplify right side
    78,089.20x = 4,207,851,007.65
  5. Step 5: Solve for x
    x = 4,207,851,007.65/78,089.20
  6. Step 6: Final answer
    x = 53,885.19

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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.