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Finding the Fourth Proportional to 79,457.76, 109,653.36 and 43,650

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Solution

The fourth proportional to 79,457.76, 109,653.36 and 43,650 is: 60,237.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,457.76 : 109,653.36 = 43,650 : x
  2. Step 2: Convert to fraction form
    79,457.76/109,653.36 = 43,650/x
  3. Step 3: Cross multiply
    79,457.76x = 109,653.36 × 43,650
  4. Step 4: Simplify right side
    79,457.76x = 4,786,369,164
  5. Step 5: Solve for x
    x = 4,786,369,164/79,457.76
  6. Step 6: Final answer
    x = 60,237.91

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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.