Home / 58,161.31-87,186.51-18,690.68

Finding the Fourth Proportional to 58,161.31, 87,186.51 and 18,690.68

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Solution

The fourth proportional to 58,161.31, 87,186.51 and 18,690.68 is: 28,018.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,161.31 : 87,186.51 = 18,690.68 : x
  2. Step 2: Convert to fraction form
    58,161.31/87,186.51 = 18,690.68/x
  3. Step 3: Cross multiply
    58,161.31x = 87,186.51 × 18,690.68
  4. Step 4: Simplify right side
    58,161.31x = 1,629,575,376.69
  5. Step 5: Solve for x
    x = 1,629,575,376.69/58,161.31
  6. Step 6: Final answer
    x = 28,018.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.