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Finding the Fourth Proportional to 56,630.76, 84,934.80 and 53,820.60

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Solution

The fourth proportional to 56,630.76, 84,934.80 and 53,820.60 is: 80,720.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,630.76 : 84,934.80 = 53,820.60 : x
  2. Step 2: Convert to fraction form
    56,630.76/84,934.80 = 53,820.60/x
  3. Step 3: Cross multiply
    56,630.76x = 84,934.80 × 53,820.60
  4. Step 4: Simplify right side
    56,630.76x = 4,571,241,896.88
  5. Step 5: Solve for x
    x = 4,571,241,896.88/56,630.76
  6. Step 6: Final answer
    x = 80,720.12

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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.