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Finding the Fourth Proportional to 53,383.80, 80,075.70 and 52,606.20

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Solution

The fourth proportional to 53,383.80, 80,075.70 and 52,606.20 is: 78,909.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,383.80 : 80,075.70 = 52,606.20 : x
  2. Step 2: Convert to fraction form
    53,383.80/80,075.70 = 52,606.20/x
  3. Step 3: Cross multiply
    53,383.80x = 80,075.70 × 52,606.20
  4. Step 4: Simplify right side
    53,383.80x = 4,212,478,289.34
  5. Step 5: Solve for x
    x = 4,212,478,289.34/53,383.80
  6. Step 6: Final answer
    x = 78,909.30

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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.