Home / 78,524.66-117,716.72-28,569.53

Finding the Fourth Proportional to 78,524.66, 117,716.72 and 28,569.53

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Solution

The fourth proportional to 78,524.66, 117,716.72 and 28,569.53 is: 42,828.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,524.66 : 117,716.72 = 28,569.53 : x
  2. Step 2: Convert to fraction form
    78,524.66/117,716.72 = 28,569.53/x
  3. Step 3: Cross multiply
    78,524.66x = 117,716.72 × 28,569.53
  4. Step 4: Simplify right side
    78,524.66x = 3,363,110,632.11
  5. Step 5: Solve for x
    x = 3,363,110,632.11/78,524.66
  6. Step 6: Final answer
    x = 42,828.72

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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.