Home / 56,739.88-85,115.46-21,709

Finding the Fourth Proportional to 56,739.88, 85,115.46 and 21,709

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Solution

The fourth proportional to 56,739.88, 85,115.46 and 21,709 is: 32,565.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,739.88 : 85,115.46 = 21,709 : x
  2. Step 2: Convert to fraction form
    56,739.88/85,115.46 = 21,709/x
  3. Step 3: Cross multiply
    56,739.88x = 85,115.46 × 21,709
  4. Step 4: Simplify right side
    56,739.88x = 1,847,771,521.14
  5. Step 5: Solve for x
    x = 1,847,771,521.14/56,739.88
  6. Step 6: Final answer
    x = 32,565.66

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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.