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Finding the Fourth Proportional to 50,880.86, 76,302.12 and 21,300.74

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Solution

The fourth proportional to 50,880.86, 76,302.12 and 21,300.74 is: 31,943.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,880.86 : 76,302.12 = 21,300.74 : x
  2. Step 2: Convert to fraction form
    50,880.86/76,302.12 = 21,300.74/x
  3. Step 3: Cross multiply
    50,880.86x = 76,302.12 × 21,300.74
  4. Step 4: Simplify right side
    50,880.86x = 1,625,291,619.57
  5. Step 5: Solve for x
    x = 1,625,291,619.57/50,880.86
  6. Step 6: Final answer
    x = 31,943.08

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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.