Home / 51,823.72-77,761.50-20,685.16

Finding the Fourth Proportional to 51,823.72, 77,761.50 and 20,685.16

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Solution

The fourth proportional to 51,823.72, 77,761.50 and 20,685.16 is: 31,038.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,823.72 : 77,761.50 = 20,685.16 : x
  2. Step 2: Convert to fraction form
    51,823.72/77,761.50 = 20,685.16/x
  3. Step 3: Cross multiply
    51,823.72x = 77,761.50 × 20,685.16
  4. Step 4: Simplify right side
    51,823.72x = 1,608,509,069.34
  5. Step 5: Solve for x
    x = 1,608,509,069.34/51,823.72
  6. Step 6: Final answer
    x = 31,038.09

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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.