Home / 57,945.60-86,918.40-21,004.80

Finding the Fourth Proportional to 57,945.60, 86,918.40 and 21,004.80

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Solution

The fourth proportional to 57,945.60, 86,918.40 and 21,004.80 is: 31,507.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,945.60 : 86,918.40 = 21,004.80 : x
  2. Step 2: Convert to fraction form
    57,945.60/86,918.40 = 21,004.80/x
  3. Step 3: Cross multiply
    57,945.60x = 86,918.40 × 21,004.80
  4. Step 4: Simplify right side
    57,945.60x = 1,825,703,608.32
  5. Step 5: Solve for x
    x = 1,825,703,608.32/57,945.60
  6. Step 6: Final answer
    x = 31,507.20

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1.5x scale

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.