Home / 74,106.40-102,315.72-57,080.56

Finding the Fourth Proportional to 74,106.40, 102,315.72 and 57,080.56

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Solution

The fourth proportional to 74,106.40, 102,315.72 and 57,080.56 is: 78,808.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,106.40 : 102,315.72 = 57,080.56 : x
  2. Step 2: Convert to fraction form
    74,106.40/102,315.72 = 57,080.56/x
  3. Step 3: Cross multiply
    74,106.40x = 102,315.72 × 57,080.56
  4. Step 4: Simplify right side
    74,106.40x = 5,840,238,594.40
  5. Step 5: Solve for x
    x = 5,840,238,594.40/74,106.40
  6. Step 6: Final answer
    x = 78,808.83

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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.