Home / 51,870.71-77,816.27-18,581.81

Finding the Fourth Proportional to 51,870.71, 77,816.27 and 18,581.81

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Solution

The fourth proportional to 51,870.71, 77,816.27 and 18,581.81 is: 27,876.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,870.71 : 77,816.27 = 18,581.81 : x
  2. Step 2: Convert to fraction form
    51,870.71/77,816.27 = 18,581.81/x
  3. Step 3: Cross multiply
    51,870.71x = 77,816.27 × 18,581.81
  4. Step 4: Simplify right side
    51,870.71x = 1,445,967,051.14
  5. Step 5: Solve for x
    x = 1,445,967,051.14/51,870.71
  6. Step 6: Final answer
    x = 27,876.37

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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.