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Finding the Fourth Proportional to 53,964.60, 80,946.90 and 51,631.80

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Solution

The fourth proportional to 53,964.60, 80,946.90 and 51,631.80 is: 77,447.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,964.60 : 80,946.90 = 51,631.80 : x
  2. Step 2: Convert to fraction form
    53,964.60/80,946.90 = 51,631.80/x
  3. Step 3: Cross multiply
    53,964.60x = 80,946.90 × 51,631.80
  4. Step 4: Simplify right side
    53,964.60x = 4,179,434,151.42
  5. Step 5: Solve for x
    x = 4,179,434,151.42/53,964.60
  6. Step 6: Final answer
    x = 77,447.70

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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.