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Finding the Fourth Proportional to 71,749.80, 107,624.70 and 19,167.40

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Solution

The fourth proportional to 71,749.80, 107,624.70 and 19,167.40 is: 28,751.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,749.80 : 107,624.70 = 19,167.40 : x
  2. Step 2: Convert to fraction form
    71,749.80/107,624.70 = 19,167.40/x
  3. Step 3: Cross multiply
    71,749.80x = 107,624.70 × 19,167.40
  4. Step 4: Simplify right side
    71,749.80x = 2,062,885,674.78
  5. Step 5: Solve for x
    x = 2,062,885,674.78/71,749.80
  6. Step 6: Final answer
    x = 28,751.10

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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.