Home / 55,663.44-76,815-30,512.88

Finding the Fourth Proportional to 55,663.44, 76,815 and 30,512.88

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Solution

The fourth proportional to 55,663.44, 76,815 and 30,512.88 is: 42,107.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,663.44 : 76,815 = 30,512.88 : x
  2. Step 2: Convert to fraction form
    55,663.44/76,815 = 30,512.88/x
  3. Step 3: Cross multiply
    55,663.44x = 76,815 × 30,512.88
  4. Step 4: Simplify right side
    55,663.44x = 2,343,846,877.20
  5. Step 5: Solve for x
    x = 2,343,846,877.20/55,663.44
  6. Step 6: Final answer
    x = 42,107.47

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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.