Home / 65,939.58-91,038.60-43,318.80

Finding the Fourth Proportional to 65,939.58, 91,038.60 and 43,318.80

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Solution

The fourth proportional to 65,939.58, 91,038.60 and 43,318.80 is: 59,807.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,939.58 : 91,038.60 = 43,318.80 : x
  2. Step 2: Convert to fraction form
    65,939.58/91,038.60 = 43,318.80/x
  3. Step 3: Cross multiply
    65,939.58x = 91,038.60 × 43,318.80
  4. Step 4: Simplify right side
    65,939.58x = 3,943,682,905.68
  5. Step 5: Solve for x
    x = 3,943,682,905.68/65,939.58
  6. Step 6: Final answer
    x = 59,807.52

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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.