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Finding the Fourth Proportional to 71,606.26, 98,606.64 and 65,618.74

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Solution

The fourth proportional to 71,606.26, 98,606.64 and 65,618.74 is: 90,361.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,606.26 : 98,606.64 = 65,618.74 : x
  2. Step 2: Convert to fraction form
    71,606.26/98,606.64 = 65,618.74/x
  3. Step 3: Cross multiply
    71,606.26x = 98,606.64 × 65,618.74
  4. Step 4: Simplify right side
    71,606.26x = 6,470,443,472.43
  5. Step 5: Solve for x
    x = 6,470,443,472.43/71,606.26
  6. Step 6: Final answer
    x = 90,361.42

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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.