Home / 51,569.94-77,360.30-21,990.90

Finding the Fourth Proportional to 51,569.94, 77,360.30 and 21,990.90

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Solution

The fourth proportional to 51,569.94, 77,360.30 and 21,990.90 is: 32,988.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,569.94 : 77,360.30 = 21,990.90 : x
  2. Step 2: Convert to fraction form
    51,569.94/77,360.30 = 21,990.90/x
  3. Step 3: Cross multiply
    51,569.94x = 77,360.30 × 21,990.90
  4. Step 4: Simplify right side
    51,569.94x = 1,701,222,621.27
  5. Step 5: Solve for x
    x = 1,701,222,621.27/51,569.94
  6. Step 6: Final answer
    x = 32,988.65

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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.