Home / 51,911.12-77,886.88-20,755.28

Finding the Fourth Proportional to 51,911.12, 77,886.88 and 20,755.28

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Solution

The fourth proportional to 51,911.12, 77,886.88 and 20,755.28 is: 31,141.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,911.12 : 77,886.88 = 20,755.28 : x
  2. Step 2: Convert to fraction form
    51,911.12/77,886.88 = 20,755.28/x
  3. Step 3: Cross multiply
    51,911.12x = 77,886.88 × 20,755.28
  4. Step 4: Simplify right side
    51,911.12x = 1,616,564,002.73
  5. Step 5: Solve for x
    x = 1,616,564,002.73/51,911.12
  6. Step 6: Final answer
    x = 31,141.00

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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.