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Finding the Fourth Proportional to 67,651.70, 93,359.67 and 39,358.40

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Solution

The fourth proportional to 67,651.70, 93,359.67 and 39,358.40 is: 54,314.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,651.70 : 93,359.67 = 39,358.40 : x
  2. Step 2: Convert to fraction form
    67,651.70/93,359.67 = 39,358.40/x
  3. Step 3: Cross multiply
    67,651.70x = 93,359.67 × 39,358.40
  4. Step 4: Simplify right side
    67,651.70x = 3,674,487,235.73
  5. Step 5: Solve for x
    x = 3,674,487,235.73/67,651.70
  6. Step 6: Final answer
    x = 54,314.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.