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Finding the Fourth Proportional to 105,280.44, 145,287.09 and 56,882.40

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Solution

The fourth proportional to 105,280.44, 145,287.09 and 56,882.40 is: 78,497.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,280.44 : 145,287.09 = 56,882.40 : x
  2. Step 2: Convert to fraction form
    105,280.44/145,287.09 = 56,882.40/x
  3. Step 3: Cross multiply
    105,280.44x = 145,287.09 × 56,882.40
  4. Step 4: Simplify right side
    105,280.44x = 8,264,278,368.22
  5. Step 5: Solve for x
    x = 8,264,278,368.22/105,280.44
  6. Step 6: Final answer
    x = 78,497.76

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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.