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Finding the Fourth Proportional to 85,878.54, 118,452.42 and 82,988.46

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Solution

The fourth proportional to 85,878.54, 118,452.42 and 82,988.46 is: 114,466.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,878.54 : 118,452.42 = 82,988.46 : x
  2. Step 2: Convert to fraction form
    85,878.54/118,452.42 = 82,988.46/x
  3. Step 3: Cross multiply
    85,878.54x = 118,452.42 × 82,988.46
  4. Step 4: Simplify right side
    85,878.54x = 9,830,183,919.07
  5. Step 5: Solve for x
    x = 9,830,183,919.07/85,878.54
  6. Step 6: Final answer
    x = 114,466.13

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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.