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Finding the Fourth Proportional to 71,383.70, 107,075.55 and 38,206.10

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Solution

The fourth proportional to 71,383.70, 107,075.55 and 38,206.10 is: 57,309.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,383.70 : 107,075.55 = 38,206.10 : x
  2. Step 2: Convert to fraction form
    71,383.70/107,075.55 = 38,206.10/x
  3. Step 3: Cross multiply
    71,383.70x = 107,075.55 × 38,206.10
  4. Step 4: Simplify right side
    71,383.70x = 4,090,939,170.86
  5. Step 5: Solve for x
    x = 4,090,939,170.86/71,383.70
  6. Step 6: Final answer
    x = 57,309.15

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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.