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Finding the Fourth Proportional to 79,242.79, 109,354.40 and 43,432.72

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Solution

The fourth proportional to 79,242.79, 109,354.40 and 43,432.72 is: 59,936.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,242.79 : 109,354.40 = 43,432.72 : x
  2. Step 2: Convert to fraction form
    79,242.79/109,354.40 = 43,432.72/x
  3. Step 3: Cross multiply
    79,242.79x = 109,354.40 × 43,432.72
  4. Step 4: Simplify right side
    79,242.79x = 4,749,559,106.38
  5. Step 5: Solve for x
    x = 4,749,559,106.38/79,242.79
  6. Step 6: Final answer
    x = 59,936.80

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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.