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Finding the Fourth Proportional to 57,379.55, 79,161.57 and 42,307.88

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Solution

The fourth proportional to 57,379.55, 79,161.57 and 42,307.88 is: 58,368.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,379.55 : 79,161.57 = 42,307.88 : x
  2. Step 2: Convert to fraction form
    57,379.55/79,161.57 = 42,307.88/x
  3. Step 3: Cross multiply
    57,379.55x = 79,161.57 × 42,307.88
  4. Step 4: Simplify right side
    57,379.55x = 3,349,157,808.36
  5. Step 5: Solve for x
    x = 3,349,157,808.36/57,379.55
  6. Step 6: Final answer
    x = 58,368.50

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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.