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Finding the Fourth Proportional to 53,843.60, 80,765.40 and 51,424.40

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Solution

The fourth proportional to 53,843.60, 80,765.40 and 51,424.40 is: 77,136.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,843.60 : 80,765.40 = 51,424.40 : x
  2. Step 2: Convert to fraction form
    53,843.60/80,765.40 = 51,424.40/x
  3. Step 3: Cross multiply
    53,843.60x = 80,765.40 × 51,424.40
  4. Step 4: Simplify right side
    53,843.60x = 4,153,312,235.76
  5. Step 5: Solve for x
    x = 4,153,312,235.76/53,843.60
  6. Step 6: Final answer
    x = 77,136.60

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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.