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Finding the Fourth Proportional to 79,319.50, 109,465.88 and 43,509.53

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Solution

The fourth proportional to 79,319.50, 109,465.88 and 43,509.53 is: 60,045.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,319.50 : 109,465.88 = 43,509.53 : x
  2. Step 2: Convert to fraction form
    79,319.50/109,465.88 = 43,509.53/x
  3. Step 3: Cross multiply
    79,319.50x = 109,465.88 × 43,509.53
  4. Step 4: Simplify right side
    79,319.50x = 4,762,809,045.95
  5. Step 5: Solve for x
    x = 4,762,809,045.95/79,319.50
  6. Step 6: Final answer
    x = 60,045.88

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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.