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Finding the Fourth Proportional to 78,694.62, 108,597.12 and 42,884.88

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Solution

The fourth proportional to 78,694.62, 108,597.12 and 42,884.88 is: 59,180.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,694.62 : 108,597.12 = 42,884.88 : x
  2. Step 2: Convert to fraction form
    78,694.62/108,597.12 = 42,884.88/x
  3. Step 3: Cross multiply
    78,694.62x = 108,597.12 × 42,884.88
  4. Step 4: Simplify right side
    78,694.62x = 4,657,174,459.55
  5. Step 5: Solve for x
    x = 4,657,174,459.55/78,694.62
  6. Step 6: Final answer
    x = 59,180.34

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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.