Home / 79,740.40-119,626.80-27,155.20

Finding the Fourth Proportional to 79,740.40, 119,626.80 and 27,155.20

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Solution

The fourth proportional to 79,740.40, 119,626.80 and 27,155.20 is: 40,738.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,740.40 : 119,626.80 = 27,155.20 : x
  2. Step 2: Convert to fraction form
    79,740.40/119,626.80 = 27,155.20/x
  3. Step 3: Cross multiply
    79,740.40x = 119,626.80 × 27,155.20
  4. Step 4: Simplify right side
    79,740.40x = 3,248,489,679.36
  5. Step 5: Solve for x
    x = 3,248,489,679.36/79,740.40
  6. Step 6: Final answer
    x = 40,738.32

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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.