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Finding the Fourth Proportional to 78,883.45, 108,859.56 and 43,073.46

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Solution

The fourth proportional to 78,883.45, 108,859.56 and 43,073.46 is: 59,441.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,883.45 : 108,859.56 = 43,073.46 : x
  2. Step 2: Convert to fraction form
    78,883.45/108,859.56 = 43,073.46/x
  3. Step 3: Cross multiply
    78,883.45x = 108,859.56 × 43,073.46
  4. Step 4: Simplify right side
    78,883.45x = 4,688,957,903.28
  5. Step 5: Solve for x
    x = 4,688,957,903.28/78,883.45
  6. Step 6: Final answer
    x = 59,441.59

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1.5x scale

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.