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Finding the Fourth Proportional to 97,978.87, 135,200.50 and 57,690.01

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Solution

The fourth proportional to 97,978.87, 135,200.50 and 57,690.01 is: 79,606.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,978.87 : 135,200.50 = 57,690.01 : x
  2. Step 2: Convert to fraction form
    97,978.87/135,200.50 = 57,690.01/x
  3. Step 3: Cross multiply
    97,978.87x = 135,200.50 × 57,690.01
  4. Step 4: Simplify right side
    97,978.87x = 7,799,718,197.01
  5. Step 5: Solve for x
    x = 7,799,718,197.01/97,978.87
  6. Step 6: Final answer
    x = 79,606.13

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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.