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Finding the Fourth Proportional to 74,155.25, 102,348.47 and 57,990.53

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Solution

The fourth proportional to 74,155.25, 102,348.47 and 57,990.53 is: 80,038.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,155.25 : 102,348.47 = 57,990.53 : x
  2. Step 2: Convert to fraction form
    74,155.25/102,348.47 = 57,990.53/x
  3. Step 3: Cross multiply
    74,155.25x = 102,348.47 × 57,990.53
  4. Step 4: Simplify right side
    74,155.25x = 5,935,242,019.99
  5. Step 5: Solve for x
    x = 5,935,242,019.99/74,155.25
  6. Step 6: Final answer
    x = 80,038.06

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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.