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Finding the Fourth Proportional to 56,390.99, 77,784.37 and 36,274.10

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Solution

The fourth proportional to 56,390.99, 77,784.37 and 36,274.10 is: 50,035.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,390.99 : 77,784.37 = 36,274.10 : x
  2. Step 2: Convert to fraction form
    56,390.99/77,784.37 = 36,274.10/x
  3. Step 3: Cross multiply
    56,390.99x = 77,784.37 × 36,274.10
  4. Step 4: Simplify right side
    56,390.99x = 2,821,557,536.21
  5. Step 5: Solve for x
    x = 2,821,557,536.21/56,390.99
  6. Step 6: Final answer
    x = 50,035.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.