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Finding the Fourth Proportional to 71,530.70, 98,710.44 and 39,265.34

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Solution

The fourth proportional to 71,530.70, 98,710.44 and 39,265.34 is: 54,185.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,530.70 : 98,710.44 = 39,265.34 : x
  2. Step 2: Convert to fraction form
    71,530.70/98,710.44 = 39,265.34/x
  3. Step 3: Cross multiply
    71,530.70x = 98,710.44 × 39,265.34
  4. Step 4: Simplify right side
    71,530.70x = 3,875,898,988.15
  5. Step 5: Solve for x
    x = 3,875,898,988.15/71,530.70
  6. Step 6: Final answer
    x = 54,185.11

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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.