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Finding the Fourth Proportional to 71,950.20, 107,925.30 and 71,489.40

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Solution

The fourth proportional to 71,950.20, 107,925.30 and 71,489.40 is: 107,234.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,950.20 : 107,925.30 = 71,489.40 : x
  2. Step 2: Convert to fraction form
    71,950.20/107,925.30 = 71,489.40/x
  3. Step 3: Cross multiply
    71,950.20x = 107,925.30 × 71,489.40
  4. Step 4: Simplify right side
    71,950.20x = 7,715,514,941.82
  5. Step 5: Solve for x
    x = 7,715,514,941.82/71,950.20
  6. Step 6: Final answer
    x = 107,234.10

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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.