Home / 85,534.96-128,307.12-38,791.36

Finding the Fourth Proportional to 85,534.96, 128,307.12 and 38,791.36

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Solution

The fourth proportional to 85,534.96, 128,307.12 and 38,791.36 is: 58,189.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,534.96 : 128,307.12 = 38,791.36 : x
  2. Step 2: Convert to fraction form
    85,534.96/128,307.12 = 38,791.36/x
  3. Step 3: Cross multiply
    85,534.96x = 128,307.12 × 38,791.36
  4. Step 4: Simplify right side
    85,534.96x = 4,977,207,682.48
  5. Step 5: Solve for x
    x = 4,977,207,682.48/85,534.96
  6. Step 6: Final answer
    x = 58,189.16

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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.