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Finding the Fourth Proportional to 51,687.20, 77,530.80 and 16,630.40

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Solution

The fourth proportional to 51,687.20, 77,530.80 and 16,630.40 is: 24,945.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,687.20 : 77,530.80 = 16,630.40 : x
  2. Step 2: Convert to fraction form
    51,687.20/77,530.80 = 16,630.40/x
  3. Step 3: Cross multiply
    51,687.20x = 77,530.80 × 16,630.40
  4. Step 4: Simplify right side
    51,687.20x = 1,289,368,216.32
  5. Step 5: Solve for x
    x = 1,289,368,216.32/51,687.20
  6. Step 6: Final answer
    x = 24,945.60

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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.