Home / 78,183.12-117,304.20-47,040.24

Finding the Fourth Proportional to 78,183.12, 117,304.20 and 47,040.24

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Solution

The fourth proportional to 78,183.12, 117,304.20 and 47,040.24 is: 70,578.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,183.12 : 117,304.20 = 47,040.24 : x
  2. Step 2: Convert to fraction form
    78,183.12/117,304.20 = 47,040.24/x
  3. Step 3: Cross multiply
    78,183.12x = 117,304.20 × 47,040.24
  4. Step 4: Simplify right side
    78,183.12x = 5,518,017,721.01
  5. Step 5: Solve for x
    x = 5,518,017,721.01/78,183.12
  6. Step 6: Final answer
    x = 70,578.12

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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.