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Finding the Fourth Proportional to 79,476.64, 119,215.01 and 20,312.37

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Solution

The fourth proportional to 79,476.64, 119,215.01 and 20,312.37 is: 30,468.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,476.64 : 119,215.01 = 20,312.37 : x
  2. Step 2: Convert to fraction form
    79,476.64/119,215.01 = 20,312.37/x
  3. Step 3: Cross multiply
    79,476.64x = 119,215.01 × 20,312.37
  4. Step 4: Simplify right side
    79,476.64x = 2,421,539,443.45
  5. Step 5: Solve for x
    x = 2,421,539,443.45/79,476.64
  6. Step 6: Final answer
    x = 30,468.57

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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.