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Finding the Fourth Proportional to 53,479.20, 80,218.80 and 14,040.30

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Solution

The fourth proportional to 53,479.20, 80,218.80 and 14,040.30 is: 21,060.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,479.20 : 80,218.80 = 14,040.30 : x
  2. Step 2: Convert to fraction form
    53,479.20/80,218.80 = 14,040.30/x
  3. Step 3: Cross multiply
    53,479.20x = 80,218.80 × 14,040.30
  4. Step 4: Simplify right side
    53,479.20x = 1,126,296,017.64
  5. Step 5: Solve for x
    x = 1,126,296,017.64/53,479.20
  6. Step 6: Final answer
    x = 21,060.45

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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.