Home / 55,018.47-75,912.87-31,139.94

Finding the Fourth Proportional to 55,018.47, 75,912.87 and 31,139.94

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Solution

The fourth proportional to 55,018.47, 75,912.87 and 31,139.94 is: 42,965.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,018.47 : 75,912.87 = 31,139.94 : x
  2. Step 2: Convert to fraction form
    55,018.47/75,912.87 = 31,139.94/x
  3. Step 3: Cross multiply
    55,018.47x = 75,912.87 × 31,139.94
  4. Step 4: Simplify right side
    55,018.47x = 2,363,922,217.03
  5. Step 5: Solve for x
    x = 2,363,922,217.03/55,018.47
  6. Step 6: Final answer
    x = 42,965.98

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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.