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Finding the Fourth Proportional to 85,611.54, 118,256.81 and 65,714.29

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Solution

The fourth proportional to 85,611.54, 118,256.81 and 65,714.29 is: 90,772.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,611.54 : 118,256.81 = 65,714.29 : x
  2. Step 2: Convert to fraction form
    85,611.54/118,256.81 = 65,714.29/x
  3. Step 3: Cross multiply
    85,611.54x = 118,256.81 × 65,714.29
  4. Step 4: Simplify right side
    85,611.54x = 7,771,162,306.81
  5. Step 5: Solve for x
    x = 7,771,162,306.81/85,611.54
  6. Step 6: Final answer
    x = 90,772.37

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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.