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Finding the Fourth Proportional to 78,856.43, 108,824.45 and 43,048.35

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Solution

The fourth proportional to 78,856.43, 108,824.45 and 43,048.35 is: 59,408.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,856.43 : 108,824.45 = 43,048.35 : x
  2. Step 2: Convert to fraction form
    78,856.43/108,824.45 = 43,048.35/x
  3. Step 3: Cross multiply
    78,856.43x = 108,824.45 × 43,048.35
  4. Step 4: Simplify right side
    78,856.43x = 4,684,712,796.92
  5. Step 5: Solve for x
    x = 4,684,712,796.92/78,856.43
  6. Step 6: Final answer
    x = 59,408.13

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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.