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Finding the Fourth Proportional to 51,791.58, 77,689.80 and 18,527.40

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Solution

The fourth proportional to 51,791.58, 77,689.80 and 18,527.40 is: 27,791.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,791.58 : 77,689.80 = 18,527.40 : x
  2. Step 2: Convert to fraction form
    51,791.58/77,689.80 = 18,527.40/x
  3. Step 3: Cross multiply
    51,791.58x = 77,689.80 × 18,527.40
  4. Step 4: Simplify right side
    51,791.58x = 1,439,390,000.52
  5. Step 5: Solve for x
    x = 1,439,390,000.52/51,791.58
  6. Step 6: Final answer
    x = 27,791.97

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1.5x scale

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.