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Finding the Fourth Proportional to 71,130.84, 98,155.62 and 39,299.46

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Solution

The fourth proportional to 71,130.84, 98,155.62 and 39,299.46 is: 54,230.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,130.84 : 98,155.62 = 39,299.46 : x
  2. Step 2: Convert to fraction form
    71,130.84/98,155.62 = 39,299.46/x
  3. Step 3: Cross multiply
    71,130.84x = 98,155.62 × 39,299.46
  4. Step 4: Simplify right side
    71,130.84x = 3,857,462,861.97
  5. Step 5: Solve for x
    x = 3,857,462,861.97/71,130.84
  6. Step 6: Final answer
    x = 54,230.53

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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.