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Finding the Fourth Proportional to 85,437.59, 128,083.73 and 52,181.01

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Solution

The fourth proportional to 85,437.59, 128,083.73 and 52,181.01 is: 78,227.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,437.59 : 128,083.73 = 52,181.01 : x
  2. Step 2: Convert to fraction form
    85,437.59/128,083.73 = 52,181.01/x
  3. Step 3: Cross multiply
    85,437.59x = 128,083.73 × 52,181.01
  4. Step 4: Simplify right side
    85,437.59x = 6,683,538,135.06
  5. Step 5: Solve for x
    x = 6,683,538,135.06/85,437.59
  6. Step 6: Final answer
    x = 78,227.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.