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Finding the Fourth Proportional to 53,969.20, 80,824.20 and 51,636.40

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Solution

The fourth proportional to 53,969.20, 80,824.20 and 51,636.40 is: 77,330.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,969.20 : 80,824.20 = 51,636.40 : x
  2. Step 2: Convert to fraction form
    53,969.20/80,824.20 = 51,636.40/x
  3. Step 3: Cross multiply
    53,969.20x = 80,824.20 × 51,636.40
  4. Step 4: Simplify right side
    53,969.20x = 4,173,470,720.88
  5. Step 5: Solve for x
    x = 4,173,470,720.88/53,969.20
  6. Step 6: Final answer
    x = 77,330.60

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1.5x scale

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.