Home / 85,984.90-128,983.11-30,566.02

Finding the Fourth Proportional to 85,984.90, 128,983.11 and 30,566.02

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Solution

The fourth proportional to 85,984.90, 128,983.11 and 30,566.02 is: 45,851.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,984.90 : 128,983.11 = 30,566.02 : x
  2. Step 2: Convert to fraction form
    85,984.90/128,983.11 = 30,566.02/x
  3. Step 3: Cross multiply
    85,984.90x = 128,983.11 × 30,566.02
  4. Step 4: Simplify right side
    85,984.90x = 3,942,500,319.92
  5. Step 5: Solve for x
    x = 3,942,500,319.92/85,984.90
  6. Step 6: Final answer
    x = 45,851.08

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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.