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Finding the Fourth Proportional to 79,785.85, 119,681.81 and 29,860.69

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Solution

The fourth proportional to 79,785.85, 119,681.81 and 29,860.69 is: 44,792.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,785.85 : 119,681.81 = 29,860.69 : x
  2. Step 2: Convert to fraction form
    79,785.85/119,681.81 = 29,860.69/x
  3. Step 3: Cross multiply
    79,785.85x = 119,681.81 × 29,860.69
  4. Step 4: Simplify right side
    79,785.85x = 3,573,780,679.34
  5. Step 5: Solve for x
    x = 3,573,780,679.34/79,785.85
  6. Step 6: Final answer
    x = 44,792.16

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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.