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Finding the Fourth Proportional to 53,980.39, 80,963.20 and 14,539.87

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Solution

The fourth proportional to 53,980.39, 80,963.20 and 14,539.87 is: 21,807.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,980.39 : 80,963.20 = 14,539.87 : x
  2. Step 2: Convert to fraction form
    53,980.39/80,963.20 = 14,539.87/x
  3. Step 3: Cross multiply
    53,980.39x = 80,963.20 × 14,539.87
  4. Step 4: Simplify right side
    53,980.39x = 1,177,194,402.78
  5. Step 5: Solve for x
    x = 1,177,194,402.78/53,980.39
  6. Step 6: Final answer
    x = 21,807.82

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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.