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Finding the Fourth Proportional to 79,479.55, 109,681.44 and 43,669.45

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Solution

The fourth proportional to 79,479.55, 109,681.44 and 43,669.45 is: 60,263.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,479.55 : 109,681.44 = 43,669.45 : x
  2. Step 2: Convert to fraction form
    79,479.55/109,681.44 = 43,669.45/x
  3. Step 3: Cross multiply
    79,479.55x = 109,681.44 × 43,669.45
  4. Step 4: Simplify right side
    79,479.55x = 4,789,728,160.01
  5. Step 5: Solve for x
    x = 4,789,728,160.01/79,479.55
  6. Step 6: Final answer
    x = 60,263.65

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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.