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Finding the Fourth Proportional to 85,676.53, 118,219.53 and 53,822.89

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Solution

The fourth proportional to 85,676.53, 118,219.53 and 53,822.89 is: 74,266.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,676.53 : 118,219.53 = 53,822.89 : x
  2. Step 2: Convert to fraction form
    85,676.53/118,219.53 = 53,822.89/x
  3. Step 3: Cross multiply
    85,676.53x = 118,219.53 × 53,822.89
  4. Step 4: Simplify right side
    85,676.53x = 6,362,916,759.04
  5. Step 5: Solve for x
    x = 6,362,916,759.04/85,676.53
  6. Step 6: Final answer
    x = 74,266.74

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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.