Home / 105,484.30-145,562.70-57,728.41

Finding the Fourth Proportional to 105,484.30, 145,562.70 and 57,728.41

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Solution

The fourth proportional to 105,484.30, 145,562.70 and 57,728.41 is: 79,662.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,484.30 : 145,562.70 = 57,728.41 : x
  2. Step 2: Convert to fraction form
    105,484.30/145,562.70 = 57,728.41/x
  3. Step 3: Cross multiply
    105,484.30x = 145,562.70 × 57,728.41
  4. Step 4: Simplify right side
    105,484.30x = 8,403,103,226.31
  5. Step 5: Solve for x
    x = 8,403,103,226.31/105,484.30
  6. Step 6: Final answer
    x = 79,662.12

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Why These Related Problems?

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