Home / 105,311.11-145,329.32-57,564.65

Finding the Fourth Proportional to 105,311.11, 145,329.32 and 57,564.65

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Solution

The fourth proportional to 105,311.11, 145,329.32 and 57,564.65 is: 79,439.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,311.11 : 145,329.32 = 57,564.65 : x
  2. Step 2: Convert to fraction form
    105,311.11/145,329.32 = 57,564.65/x
  3. Step 3: Cross multiply
    105,311.11x = 145,329.32 × 57,564.65
  4. Step 4: Simplify right side
    105,311.11x = 8,365,830,426.07
  5. Step 5: Solve for x
    x = 8,365,830,426.07/105,311.11
  6. Step 6: Final answer
    x = 79,439.20

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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.