Home / 85,991.48-128,939.86-46,057.28

Finding the Fourth Proportional to 85,991.48, 128,939.86 and 46,057.28

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Solution

The fourth proportional to 85,991.48, 128,939.86 and 46,057.28 is: 69,060.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,991.48 : 128,939.86 = 46,057.28 : x
  2. Step 2: Convert to fraction form
    85,991.48/128,939.86 = 46,057.28/x
  3. Step 3: Cross multiply
    85,991.48x = 128,939.86 × 46,057.28
  4. Step 4: Simplify right side
    85,991.48x = 5,938,619,235.18
  5. Step 5: Solve for x
    x = 5,938,619,235.18/85,991.48
  6. Step 6: Final answer
    x = 69,060.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.