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Finding the Fourth Proportional to 79,972.50, 110,371.80 and 46,438.50

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Solution

The fourth proportional to 79,972.50, 110,371.80 and 46,438.50 is: 64,090.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,972.50 : 110,371.80 = 46,438.50 : x
  2. Step 2: Convert to fraction form
    79,972.50/110,371.80 = 46,438.50/x
  3. Step 3: Cross multiply
    79,972.50x = 110,371.80 × 46,438.50
  4. Step 4: Simplify right side
    79,972.50x = 5,125,500,834.30
  5. Step 5: Solve for x
    x = 5,125,500,834.30/79,972.50
  6. Step 6: Final answer
    x = 64,090.79

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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.