Home / 83,980.59-115,890.81-45,739.26

Finding the Fourth Proportional to 83,980.59, 115,890.81 and 45,739.26

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Solution

The fourth proportional to 83,980.59, 115,890.81 and 45,739.26 is: 63,118.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,980.59 : 115,890.81 = 45,739.26 : x
  2. Step 2: Convert to fraction form
    83,980.59/115,890.81 = 45,739.26/x
  3. Step 3: Cross multiply
    83,980.59x = 115,890.81 × 45,739.26
  4. Step 4: Simplify right side
    83,980.59x = 5,300,759,890.20
  5. Step 5: Solve for x
    x = 5,300,759,890.20/83,980.59
  6. Step 6: Final answer
    x = 63,118.87

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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.