Home / 82,108.80-113,155.31-59,409.36

Finding the Fourth Proportional to 82,108.80, 113,155.31 and 59,409.36

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Solution

The fourth proportional to 82,108.80, 113,155.31 and 59,409.36 is: 81,872.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,108.80 : 113,155.31 = 59,409.36 : x
  2. Step 2: Convert to fraction form
    82,108.80/113,155.31 = 59,409.36/x
  3. Step 3: Cross multiply
    82,108.80x = 113,155.31 × 59,409.36
  4. Step 4: Simplify right side
    82,108.80x = 6,722,484,696.23
  5. Step 5: Solve for x
    x = 6,722,484,696.23/82,108.80
  6. Step 6: Final answer
    x = 81,872.89

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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.