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Finding the Fourth Proportional to 51,089.90, 76,635.28 and 17,809.90

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Solution

The fourth proportional to 51,089.90, 76,635.28 and 17,809.90 is: 26,715.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,089.90 : 76,635.28 = 17,809.90 : x
  2. Step 2: Convert to fraction form
    51,089.90/76,635.28 = 17,809.90/x
  3. Step 3: Cross multiply
    51,089.90x = 76,635.28 × 17,809.90
  4. Step 4: Simplify right side
    51,089.90x = 1,364,866,935.02
  5. Step 5: Solve for x
    x = 1,364,866,935.02/51,089.90
  6. Step 6: Final answer
    x = 26,715.00

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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.