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Finding the Fourth Proportional to 79,232.76, 109,342.44 and 47,403

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Solution

The fourth proportional to 79,232.76, 109,342.44 and 47,403 is: 65,416.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,232.76 : 109,342.44 = 47,403 : x
  2. Step 2: Convert to fraction form
    79,232.76/109,342.44 = 47,403/x
  3. Step 3: Cross multiply
    79,232.76x = 109,342.44 × 47,403
  4. Step 4: Simplify right side
    79,232.76x = 5,183,159,683.32
  5. Step 5: Solve for x
    x = 5,183,159,683.32/79,232.76
  6. Step 6: Final answer
    x = 65,416.88

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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.