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Finding the Fourth Proportional to 79,314.40, 109,463.02 and 47,483.28

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Solution

The fourth proportional to 79,314.40, 109,463.02 and 47,483.28 is: 65,532.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,314.40 : 109,463.02 = 47,483.28 : x
  2. Step 2: Convert to fraction form
    79,314.40/109,463.02 = 47,483.28/x
  3. Step 3: Cross multiply
    79,314.40x = 109,463.02 × 47,483.28
  4. Step 4: Simplify right side
    79,314.40x = 5,197,663,228.31
  5. Step 5: Solve for x
    x = 5,197,663,228.31/79,314.40
  6. Step 6: Final answer
    x = 65,532.40

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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.