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Finding the Fourth Proportional to 71,564.70, 98,761.98 and 39,300.68

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Solution

The fourth proportional to 71,564.70, 98,761.98 and 39,300.68 is: 54,236.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,564.70 : 98,761.98 = 39,300.68 : x
  2. Step 2: Convert to fraction form
    71,564.70/98,761.98 = 39,300.68/x
  3. Step 3: Cross multiply
    71,564.70x = 98,761.98 × 39,300.68
  4. Step 4: Simplify right side
    71,564.70x = 3,881,412,478.34
  5. Step 5: Solve for x
    x = 3,881,412,478.34/71,564.70
  6. Step 6: Final answer
    x = 54,236.41

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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.