Home / 51,870.46-77,815.89-18,581.56

Finding the Fourth Proportional to 51,870.46, 77,815.89 and 18,581.56

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Solution

The fourth proportional to 51,870.46, 77,815.89 and 18,581.56 is: 27,875.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,870.46 : 77,815.89 = 18,581.56 : x
  2. Step 2: Convert to fraction form
    51,870.46/77,815.89 = 18,581.56/x
  3. Step 3: Cross multiply
    51,870.46x = 77,815.89 × 18,581.56
  4. Step 4: Simplify right side
    51,870.46x = 1,445,940,628.99
  5. Step 5: Solve for x
    x = 1,445,940,628.99/51,870.46
  6. Step 6: Final answer
    x = 27,875.99

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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.