Home / 55,229.40-76,218.48-31,355.28

Finding the Fourth Proportional to 55,229.40, 76,218.48 and 31,355.28

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Solution

The fourth proportional to 55,229.40, 76,218.48 and 31,355.28 is: 43,271.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,229.40 : 76,218.48 = 31,355.28 : x
  2. Step 2: Convert to fraction form
    55,229.40/76,218.48 = 31,355.28/x
  3. Step 3: Cross multiply
    55,229.40x = 76,218.48 × 31,355.28
  4. Step 4: Simplify right side
    55,229.40x = 2,389,851,781.57
  5. Step 5: Solve for x
    x = 2,389,851,781.57/55,229.40
  6. Step 6: Final answer
    x = 43,271.37

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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.