Home / 81,140.42-121,710.67-53,084.04

Finding the Fourth Proportional to 81,140.42, 121,710.67 and 53,084.04

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Solution

The fourth proportional to 81,140.42, 121,710.67 and 53,084.04 is: 79,626.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,140.42 : 121,710.67 = 53,084.04 : x
  2. Step 2: Convert to fraction form
    81,140.42/121,710.67 = 53,084.04/x
  3. Step 3: Cross multiply
    81,140.42x = 121,710.67 × 53,084.04
  4. Step 4: Simplify right side
    81,140.42x = 6,460,893,942.00
  5. Step 5: Solve for x
    x = 6,460,893,942.00/81,140.42
  6. Step 6: Final answer
    x = 79,626.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.