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Finding the Fourth Proportional to 79,431.88, 118,972.84 and 53,012.92

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Solution

The fourth proportional to 79,431.88, 118,972.84 and 53,012.92 is: 79,402.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,431.88 : 118,972.84 = 53,012.92 : x
  2. Step 2: Convert to fraction form
    79,431.88/118,972.84 = 53,012.92/x
  3. Step 3: Cross multiply
    79,431.88x = 118,972.84 × 53,012.92
  4. Step 4: Simplify right side
    79,431.88x = 6,307,097,649.09
  5. Step 5: Solve for x
    x = 6,307,097,649.09/79,431.88
  6. Step 6: Final answer
    x = 79,402.60

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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.