Home / 77,778.75-116,685.41-28,530.75

Finding the Fourth Proportional to 77,778.75, 116,685.41 and 28,530.75

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Solution

The fourth proportional to 77,778.75, 116,685.41 and 28,530.75 is: 42,802.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,778.75 : 116,685.41 = 28,530.75 : x
  2. Step 2: Convert to fraction form
    77,778.75/116,685.41 = 28,530.75/x
  3. Step 3: Cross multiply
    77,778.75x = 116,685.41 × 28,530.75
  4. Step 4: Simplify right side
    77,778.75x = 3,329,122,118.70
  5. Step 5: Solve for x
    x = 3,329,122,118.70/77,778.75
  6. Step 6: Final answer
    x = 42,802.46

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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.