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Finding the Fourth Proportional to 56,760.51, 85,147.84 and 19,317.71

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Solution

The fourth proportional to 56,760.51, 85,147.84 and 19,317.71 is: 28,978.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,760.51 : 85,147.84 = 19,317.71 : x
  2. Step 2: Convert to fraction form
    56,760.51/85,147.84 = 19,317.71/x
  3. Step 3: Cross multiply
    56,760.51x = 85,147.84 × 19,317.71
  4. Step 4: Simplify right side
    56,760.51x = 1,644,861,161.74
  5. Step 5: Solve for x
    x = 1,644,861,161.74/56,760.51
  6. Step 6: Final answer
    x = 28,978.97

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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.