Home / 57,981.78-86,971.30-18,539.24

Finding the Fourth Proportional to 57,981.78, 86,971.30 and 18,539.24

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Solution

The fourth proportional to 57,981.78, 86,971.30 and 18,539.24 is: 27,808.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,981.78 : 86,971.30 = 18,539.24 : x
  2. Step 2: Convert to fraction form
    57,981.78/86,971.30 = 18,539.24/x
  3. Step 3: Cross multiply
    57,981.78x = 86,971.30 × 18,539.24
  4. Step 4: Simplify right side
    57,981.78x = 1,612,381,322.61
  5. Step 5: Solve for x
    x = 1,612,381,322.61/57,981.78
  6. Step 6: Final answer
    x = 27,808.41

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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.