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Finding the Fourth Proportional to 57,307.88, 79,083.62 and 31,812.78

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Solution

The fourth proportional to 57,307.88, 79,083.62 and 31,812.78 is: 43,900.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,307.88 : 79,083.62 = 31,812.78 : x
  2. Step 2: Convert to fraction form
    57,307.88/79,083.62 = 31,812.78/x
  3. Step 3: Cross multiply
    57,307.88x = 79,083.62 × 31,812.78
  4. Step 4: Simplify right side
    57,307.88x = 2,515,869,804.66
  5. Step 5: Solve for x
    x = 2,515,869,804.66/57,307.88
  6. Step 6: Final answer
    x = 43,900.94

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1.5x scale

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.