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Finding the Fourth Proportional to 71,077.79, 98,086.07 and 39,246

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Solution

The fourth proportional to 71,077.79, 98,086.07 and 39,246 is: 54,158.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,077.79 : 98,086.07 = 39,246 : x
  2. Step 2: Convert to fraction form
    71,077.79/98,086.07 = 39,246/x
  3. Step 3: Cross multiply
    71,077.79x = 98,086.07 × 39,246
  4. Step 4: Simplify right side
    71,077.79x = 3,849,485,706.99
  5. Step 5: Solve for x
    x = 3,849,485,706.99/71,077.79
  6. Step 6: Final answer
    x = 54,158.77

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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.