Home / 86,578.74-119,408.04-72,728.28

Finding the Fourth Proportional to 86,578.74, 119,408.04 and 72,728.28

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Solution

The fourth proportional to 86,578.74, 119,408.04 and 72,728.28 is: 100,305.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,578.74 : 119,408.04 = 72,728.28 : x
  2. Step 2: Convert to fraction form
    86,578.74/119,408.04 = 72,728.28/x
  3. Step 3: Cross multiply
    86,578.74x = 119,408.04 × 72,728.28
  4. Step 4: Simplify right side
    86,578.74x = 8,684,341,367.37
  5. Step 5: Solve for x
    x = 8,684,341,367.37/86,578.74
  6. Step 6: Final answer
    x = 100,305.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.