Home / 85,401.21-117,888.41-55,189.02

Finding the Fourth Proportional to 85,401.21, 117,888.41 and 55,189.02

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Solution

The fourth proportional to 85,401.21, 117,888.41 and 55,189.02 is: 76,183.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,401.21 : 117,888.41 = 55,189.02 : x
  2. Step 2: Convert to fraction form
    85,401.21/117,888.41 = 55,189.02/x
  3. Step 3: Cross multiply
    85,401.21x = 117,888.41 × 55,189.02
  4. Step 4: Simplify right side
    85,401.21x = 6,506,146,397.31
  5. Step 5: Solve for x
    x = 6,506,146,397.31/85,401.21
  6. Step 6: Final answer
    x = 76,183.30

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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.