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Finding the Fourth Proportional to 79,374.80, 109,538.36 and 43,564.16

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Solution

The fourth proportional to 79,374.80, 109,538.36 and 43,564.16 is: 60,119.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,374.80 : 109,538.36 = 43,564.16 : x
  2. Step 2: Convert to fraction form
    79,374.80/109,538.36 = 43,564.16/x
  3. Step 3: Cross multiply
    79,374.80x = 109,538.36 × 43,564.16
  4. Step 4: Simplify right side
    79,374.80x = 4,771,946,641.18
  5. Step 5: Solve for x
    x = 4,771,946,641.18/79,374.80
  6. Step 6: Final answer
    x = 60,119.16

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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.