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Finding the Fourth Proportional to 89,507.34, 123,539.00 and 56,780.64

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Solution

The fourth proportional to 89,507.34, 123,539.00 and 56,780.64 is: 78,369.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,507.34 : 123,539.00 = 56,780.64 : x
  2. Step 2: Convert to fraction form
    89,507.34/123,539.00 = 56,780.64/x
  3. Step 3: Cross multiply
    89,507.34x = 123,539.00 × 56,780.64
  4. Step 4: Simplify right side
    89,507.34x = 7,014,623,201.06
  5. Step 5: Solve for x
    x = 7,014,623,201.06/89,507.34
  6. Step 6: Final answer
    x = 78,369.25

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.