Home / 85,407.13-117,917.27-76,439.08

Finding the Fourth Proportional to 85,407.13, 117,917.27 and 76,439.08

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Solution

The fourth proportional to 85,407.13, 117,917.27 and 76,439.08 is: 105,535.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,407.13 : 117,917.27 = 76,439.08 : x
  2. Step 2: Convert to fraction form
    85,407.13/117,917.27 = 76,439.08/x
  3. Step 3: Cross multiply
    85,407.13x = 117,917.27 × 76,439.08
  4. Step 4: Simplify right side
    85,407.13x = 9,013,487,634.91
  5. Step 5: Solve for x
    x = 9,013,487,634.91/85,407.13
  6. Step 6: Final answer
    x = 105,535.54

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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.