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Finding the Fourth Proportional to 53,312.80, 79,947.60 and 18,234.40

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Solution

The fourth proportional to 53,312.80, 79,947.60 and 18,234.40 is: 27,344.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,312.80 : 79,947.60 = 18,234.40 : x
  2. Step 2: Convert to fraction form
    53,312.80/79,947.60 = 18,234.40/x
  3. Step 3: Cross multiply
    53,312.80x = 79,947.60 × 18,234.40
  4. Step 4: Simplify right side
    53,312.80x = 1,457,796,517.44
  5. Step 5: Solve for x
    x = 1,457,796,517.44/53,312.80
  6. Step 6: Final answer
    x = 27,344.21

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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.