Home / 79,836.72-119,828.79-40,421.45

Finding the Fourth Proportional to 79,836.72, 119,828.79 and 40,421.45

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Solution

The fourth proportional to 79,836.72, 119,828.79 and 40,421.45 is: 60,669.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,836.72 : 119,828.79 = 40,421.45 : x
  2. Step 2: Convert to fraction form
    79,836.72/119,828.79 = 40,421.45/x
  3. Step 3: Cross multiply
    79,836.72x = 119,828.79 × 40,421.45
  4. Step 4: Simplify right side
    79,836.72x = 4,843,652,844.40
  5. Step 5: Solve for x
    x = 4,843,652,844.40/79,836.72
  6. Step 6: Final answer
    x = 60,669.49

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1.5x scale

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.