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Finding the Fourth Proportional to 57,756.69, 79,741.71 and 51,696.42

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Solution

The fourth proportional to 57,756.69, 79,741.71 and 51,696.42 is: 71,374.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,756.69 : 79,741.71 = 51,696.42 : x
  2. Step 2: Convert to fraction form
    57,756.69/79,741.71 = 51,696.42/x
  3. Step 3: Cross multiply
    57,756.69x = 79,741.71 × 51,696.42
  4. Step 4: Simplify right side
    57,756.69x = 4,122,360,931.68
  5. Step 5: Solve for x
    x = 4,122,360,931.68/57,756.69
  6. Step 6: Final answer
    x = 71,374.60

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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.