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Finding the Fourth Proportional to 53,479.70, 80,219.55 and 14,040.80

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Solution

The fourth proportional to 53,479.70, 80,219.55 and 14,040.80 is: 21,061.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,479.70 : 80,219.55 = 14,040.80 : x
  2. Step 2: Convert to fraction form
    53,479.70/80,219.55 = 14,040.80/x
  3. Step 3: Cross multiply
    53,479.70x = 80,219.55 × 14,040.80
  4. Step 4: Simplify right side
    53,479.70x = 1,126,346,657.64
  5. Step 5: Solve for x
    x = 1,126,346,657.64/53,479.70
  6. Step 6: Final answer
    x = 21,061.20

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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.