Home / 51,872.47-77,810.22-20,281.25

Finding the Fourth Proportional to 51,872.47, 77,810.22 and 20,281.25

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Solution

The fourth proportional to 51,872.47, 77,810.22 and 20,281.25 is: 30,422.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,872.47 : 77,810.22 = 20,281.25 : x
  2. Step 2: Convert to fraction form
    51,872.47/77,810.22 = 20,281.25/x
  3. Step 3: Cross multiply
    51,872.47x = 77,810.22 × 20,281.25
  4. Step 4: Simplify right side
    51,872.47x = 1,578,088,718.90
  5. Step 5: Solve for x
    x = 1,578,088,718.90/51,872.47
  6. Step 6: Final answer
    x = 30,422.47

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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.