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Finding the Fourth Proportional to 79,368.40, 109,531.54 and 43,559.70

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Solution

The fourth proportional to 79,368.40, 109,531.54 and 43,559.70 is: 60,114.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,368.40 : 109,531.54 = 43,559.70 : x
  2. Step 2: Convert to fraction form
    79,368.40/109,531.54 = 43,559.70/x
  3. Step 3: Cross multiply
    79,368.40x = 109,531.54 × 43,559.70
  4. Step 4: Simplify right side
    79,368.40x = 4,771,161,022.94
  5. Step 5: Solve for x
    x = 4,771,161,022.94/79,368.40
  6. Step 6: Final answer
    x = 60,114.11

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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.