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Finding the Fourth Proportional to 71,566.93, 107,350.40 and 18,980.52

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Solution

The fourth proportional to 71,566.93, 107,350.40 and 18,980.52 is: 28,470.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,566.93 : 107,350.40 = 18,980.52 : x
  2. Step 2: Convert to fraction form
    71,566.93/107,350.40 = 18,980.52/x
  3. Step 3: Cross multiply
    71,566.93x = 107,350.40 × 18,980.52
  4. Step 4: Simplify right side
    71,566.93x = 2,037,565,782.55
  5. Step 5: Solve for x
    x = 2,037,565,782.55/71,566.93
  6. Step 6: Final answer
    x = 28,470.77

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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.