Home / 85,397.26-117,587.34-77,387.38

Finding the Fourth Proportional to 85,397.26, 117,587.34 and 77,387.38

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Solution

The fourth proportional to 85,397.26, 117,587.34 and 77,387.38 is: 106,558.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,397.26 : 117,587.34 = 77,387.38 : x
  2. Step 2: Convert to fraction form
    85,397.26/117,587.34 = 77,387.38/x
  3. Step 3: Cross multiply
    85,397.26x = 117,587.34 × 77,387.38
  4. Step 4: Simplify right side
    85,397.26x = 9,099,776,163.77
  5. Step 5: Solve for x
    x = 9,099,776,163.77/85,397.26
  6. Step 6: Final answer
    x = 106,558.17

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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.