Home / 55,008.76-75,910.86-31,131.58

Finding the Fourth Proportional to 55,008.76, 75,910.86 and 31,131.58

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Solution

The fourth proportional to 55,008.76, 75,910.86 and 31,131.58 is: 42,960.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,008.76 : 75,910.86 = 31,131.58 : x
  2. Step 2: Convert to fraction form
    55,008.76/75,910.86 = 31,131.58/x
  3. Step 3: Cross multiply
    55,008.76x = 75,910.86 × 31,131.58
  4. Step 4: Simplify right side
    55,008.76x = 2,363,225,010.96
  5. Step 5: Solve for x
    x = 2,363,225,010.96/55,008.76
  6. Step 6: Final answer
    x = 42,960.88

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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.