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Finding the Fourth Proportional to 91,837.60, 137,493.60 and 56,539.60

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Solution

The fourth proportional to 91,837.60, 137,493.60 and 56,539.60 is: 84,647.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,837.60 : 137,493.60 = 56,539.60 : x
  2. Step 2: Convert to fraction form
    91,837.60/137,493.60 = 56,539.60/x
  3. Step 3: Cross multiply
    91,837.60x = 137,493.60 × 56,539.60
  4. Step 4: Simplify right side
    91,837.60x = 7,773,833,146.56
  5. Step 5: Solve for x
    x = 7,773,833,146.56/91,837.60
  6. Step 6: Final answer
    x = 84,647.61

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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.