Home / 55,145.84-76,101.24-31,272.51

Finding the Fourth Proportional to 55,145.84, 76,101.24 and 31,272.51

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Solution

The fourth proportional to 55,145.84, 76,101.24 and 31,272.51 is: 43,156.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,145.84 : 76,101.24 = 31,272.51 : x
  2. Step 2: Convert to fraction form
    55,145.84/76,101.24 = 31,272.51/x
  3. Step 3: Cross multiply
    55,145.84x = 76,101.24 × 31,272.51
  4. Step 4: Simplify right side
    55,145.84x = 2,379,876,977.53
  5. Step 5: Solve for x
    x = 2,379,876,977.53/55,145.84
  6. Step 6: Final answer
    x = 43,156.06

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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.