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Finding the Fourth Proportional to 71,237.00, 98,300.30 and 39,405.21

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Solution

The fourth proportional to 71,237.00, 98,300.30 and 39,405.21 is: 54,375.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,237.00 : 98,300.30 = 39,405.21 : x
  2. Step 2: Convert to fraction form
    71,237.00/98,300.30 = 39,405.21/x
  3. Step 3: Cross multiply
    71,237.00x = 98,300.30 × 39,405.21
  4. Step 4: Simplify right side
    71,237.00x = 3,873,543,767.54
  5. Step 5: Solve for x
    x = 3,873,543,767.54/71,237.00
  6. Step 6: Final answer
    x = 54,375.45

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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.