Home / 51,870.21-77,815.52-18,581.31

Finding the Fourth Proportional to 51,870.21, 77,815.52 and 18,581.31

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Solution

The fourth proportional to 51,870.21, 77,815.52 and 18,581.31 is: 27,875.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,870.21 : 77,815.52 = 18,581.31 : x
  2. Step 2: Convert to fraction form
    51,870.21/77,815.52 = 18,581.31/x
  3. Step 3: Cross multiply
    51,870.21x = 77,815.52 × 18,581.31
  4. Step 4: Simplify right side
    51,870.21x = 1,445,914,207.02
  5. Step 5: Solve for x
    x = 1,445,914,207.02/51,870.21
  6. Step 6: Final answer
    x = 27,875.62

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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.