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Finding the Fourth Proportional to 53,939.80, 80,909.70 and 35,277.40

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Solution

The fourth proportional to 53,939.80, 80,909.70 and 35,277.40 is: 52,916.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,939.80 : 80,909.70 = 35,277.40 : x
  2. Step 2: Convert to fraction form
    53,939.80/80,909.70 = 35,277.40/x
  3. Step 3: Cross multiply
    53,939.80x = 80,909.70 × 35,277.40
  4. Step 4: Simplify right side
    53,939.80x = 2,854,283,850.78
  5. Step 5: Solve for x
    x = 2,854,283,850.78/53,939.80
  6. Step 6: Final answer
    x = 52,916.10

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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.