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Finding the Fourth Proportional to 56,759.84, 85,139.76 and 17,317.20

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Solution

The fourth proportional to 56,759.84, 85,139.76 and 17,317.20 is: 25,975.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,759.84 : 85,139.76 = 17,317.20 : x
  2. Step 2: Convert to fraction form
    56,759.84/85,139.76 = 17,317.20/x
  3. Step 3: Cross multiply
    56,759.84x = 85,139.76 × 17,317.20
  4. Step 4: Simplify right side
    56,759.84x = 1,474,382,251.87
  5. Step 5: Solve for x
    x = 1,474,382,251.87/56,759.84
  6. Step 6: Final answer
    x = 25,975.80

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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.