Home / 72,707,385.65-100,332,688.60-39,665,668.85

Finding the Fourth Proportional to 72,707,385.65, 100,332,688.60 and 39,665,668.85

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Solution

The fourth proportional to 72,707,385.65, 100,332,688.60 and 39,665,668.85 is: 54,736,711.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,707,385.65 : 100,332,688.60 = 39,665,668.85 : x
  2. Step 2: Convert to fraction form
    72,707,385.65/100,332,688.60 = 39,665,668.85/x
  3. Step 3: Cross multiply
    72,707,385.65x = 100,332,688.60 × 39,665,668.85
  4. Step 4: Simplify right side
    72,707,385.65x = 3,979,763,200,761,936.50
  5. Step 5: Solve for x
    x = 3,979,763,200,761,936.50/72,707,385.65
  6. Step 6: Final answer
    x = 54,736,711.62

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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.