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Finding the Fourth Proportional to 85,710.44, 118,241.13 and 55,505.50

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Solution

The fourth proportional to 85,710.44, 118,241.13 and 55,505.50 is: 76,572.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,710.44 : 118,241.13 = 55,505.50 : x
  2. Step 2: Convert to fraction form
    85,710.44/118,241.13 = 55,505.50/x
  3. Step 3: Cross multiply
    85,710.44x = 118,241.13 × 55,505.50
  4. Step 4: Simplify right side
    85,710.44x = 6,563,032,450.01
  5. Step 5: Solve for x
    x = 6,563,032,450.01/85,710.44
  6. Step 6: Final answer
    x = 76,572.15

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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.