Home / 55,302.56-76,321.20-31,429.28

Finding the Fourth Proportional to 55,302.56, 76,321.20 and 31,429.28

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Solution

The fourth proportional to 55,302.56, 76,321.20 and 31,429.28 is: 43,374.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,302.56 : 76,321.20 = 31,429.28 : x
  2. Step 2: Convert to fraction form
    55,302.56/76,321.20 = 31,429.28/x
  3. Step 3: Cross multiply
    55,302.56x = 76,321.20 × 31,429.28
  4. Step 4: Simplify right side
    55,302.56x = 2,398,720,364.74
  5. Step 5: Solve for x
    x = 2,398,720,364.74/55,302.56
  6. Step 6: Final answer
    x = 43,374.49

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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.