Home / 57,981.40-86,977.56-18,529.14

Finding the Fourth Proportional to 57,981.40, 86,977.56 and 18,529.14

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Solution

The fourth proportional to 57,981.40, 86,977.56 and 18,529.14 is: 27,795.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,981.40 : 86,977.56 = 18,529.14 : x
  2. Step 2: Convert to fraction form
    57,981.40/86,977.56 = 18,529.14/x
  3. Step 3: Cross multiply
    57,981.40x = 86,977.56 × 18,529.14
  4. Step 4: Simplify right side
    57,981.40x = 1,611,619,386.10
  5. Step 5: Solve for x
    x = 1,611,619,386.10/57,981.40
  6. Step 6: Final answer
    x = 27,795.45

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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.