Home / 85,116.83-117,335.18-54,485.43

Finding the Fourth Proportional to 85,116.83, 117,335.18 and 54,485.43

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Solution

The fourth proportional to 85,116.83, 117,335.18 and 54,485.43 is: 75,109.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,116.83 : 117,335.18 = 54,485.43 : x
  2. Step 2: Convert to fraction form
    85,116.83/117,335.18 = 54,485.43/x
  3. Step 3: Cross multiply
    85,116.83x = 117,335.18 × 54,485.43
  4. Step 4: Simplify right side
    85,116.83x = 6,393,057,432.63
  5. Step 5: Solve for x
    x = 6,393,057,432.63/85,116.83
  6. Step 6: Final answer
    x = 75,109.21

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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.