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Finding the Fourth Proportional to 53,965.80, 80,934.30 and 18,901.80

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Solution

The fourth proportional to 53,965.80, 80,934.30 and 18,901.80 is: 28,347.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,965.80 : 80,934.30 = 18,901.80 : x
  2. Step 2: Convert to fraction form
    53,965.80/80,934.30 = 18,901.80/x
  3. Step 3: Cross multiply
    53,965.80x = 80,934.30 × 18,901.80
  4. Step 4: Simplify right side
    53,965.80x = 1,529,803,951.74
  5. Step 5: Solve for x
    x = 1,529,803,951.74/53,965.80
  6. Step 6: Final answer
    x = 28,347.66

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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.