Home / 55,045.90-75,965.13-31,172.06

Finding the Fourth Proportional to 55,045.90, 75,965.13 and 31,172.06

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Solution

The fourth proportional to 55,045.90, 75,965.13 and 31,172.06 is: 43,018.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,045.90 : 75,965.13 = 31,172.06 : x
  2. Step 2: Convert to fraction form
    55,045.90/75,965.13 = 31,172.06/x
  3. Step 3: Cross multiply
    55,045.90x = 75,965.13 × 31,172.06
  4. Step 4: Simplify right side
    55,045.90x = 2,367,989,780.18
  5. Step 5: Solve for x
    x = 2,367,989,780.18/55,045.90
  6. Step 6: Final answer
    x = 43,018.46

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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.