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Finding the Fourth Proportional to 71,184.70, 98,236.94 and 39,355.65

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Solution

The fourth proportional to 71,184.70, 98,236.94 and 39,355.65 is: 54,311.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,184.70 : 98,236.94 = 39,355.65 : x
  2. Step 2: Convert to fraction form
    71,184.70/98,236.94 = 39,355.65/x
  3. Step 3: Cross multiply
    71,184.70x = 98,236.94 × 39,355.65
  4. Step 4: Simplify right side
    71,184.70x = 3,866,178,627.71
  5. Step 5: Solve for x
    x = 3,866,178,627.71/71,184.70
  6. Step 6: Final answer
    x = 54,311.93

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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.