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Finding the Fourth Proportional to 85,687.53, 118,234.71 and 53,833.88

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Solution

The fourth proportional to 85,687.53, 118,234.71 and 53,833.88 is: 74,281.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,687.53 : 118,234.71 = 53,833.88 : x
  2. Step 2: Convert to fraction form
    85,687.53/118,234.71 = 53,833.88/x
  3. Step 3: Cross multiply
    85,687.53x = 118,234.71 × 53,833.88
  4. Step 4: Simplify right side
    85,687.53x = 6,365,032,598.80
  5. Step 5: Solve for x
    x = 6,365,032,598.80/85,687.53
  6. Step 6: Final answer
    x = 74,281.90

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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.