Home / 85,537.36-128,276.84-43,401.20

Finding the Fourth Proportional to 85,537.36, 128,276.84 and 43,401.20

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Solution

The fourth proportional to 85,537.36, 128,276.84 and 43,401.20 is: 65,086.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,537.36 : 128,276.84 = 43,401.20 : x
  2. Step 2: Convert to fraction form
    85,537.36/128,276.84 = 43,401.20/x
  3. Step 3: Cross multiply
    85,537.36x = 128,276.84 × 43,401.20
  4. Step 4: Simplify right side
    85,537.36x = 5,567,368,788.21
  5. Step 5: Solve for x
    x = 5,567,368,788.21/85,537.36
  6. Step 6: Final answer
    x = 65,086.98

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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.