Home / 85,583.18-118,065-55,378.22

Finding the Fourth Proportional to 85,583.18, 118,065 and 55,378.22

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Solution

The fourth proportional to 85,583.18, 118,065 and 55,378.22 is: 76,396.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,583.18 : 118,065 = 55,378.22 : x
  2. Step 2: Convert to fraction form
    85,583.18/118,065 = 55,378.22/x
  3. Step 3: Cross multiply
    85,583.18x = 118,065 × 55,378.22
  4. Step 4: Simplify right side
    85,583.18x = 6,538,229,544.30
  5. Step 5: Solve for x
    x = 6,538,229,544.30/85,583.18
  6. Step 6: Final answer
    x = 76,396.20

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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.