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Finding the Fourth Proportional to 71,384.12, 98,510.76 and 39,553.44

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Solution

The fourth proportional to 71,384.12, 98,510.76 and 39,553.44 is: 54,584.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,384.12 : 98,510.76 = 39,553.44 : x
  2. Step 2: Convert to fraction form
    71,384.12/98,510.76 = 39,553.44/x
  3. Step 3: Cross multiply
    71,384.12x = 98,510.76 × 39,553.44
  4. Step 4: Simplify right side
    71,384.12x = 3,896,439,435.01
  5. Step 5: Solve for x
    x = 3,896,439,435.01/71,384.12
  6. Step 6: Final answer
    x = 54,584.12

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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.