Home / 105,379.84-145,424.28-57,633.04

Finding the Fourth Proportional to 105,379.84, 145,424.28 and 57,633.04

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Solution

The fourth proportional to 105,379.84, 145,424.28 and 57,633.04 is: 79,533.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,379.84 : 145,424.28 = 57,633.04 : x
  2. Step 2: Convert to fraction form
    105,379.84/145,424.28 = 57,633.04/x
  3. Step 3: Cross multiply
    105,379.84x = 145,424.28 × 57,633.04
  4. Step 4: Simplify right side
    105,379.84x = 8,381,243,346.21
  5. Step 5: Solve for x
    x = 8,381,243,346.21/105,379.84
  6. Step 6: Final answer
    x = 79,533.65

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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.