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Finding the Fourth Proportional to 78,604.41, 108,473.95 and 42,794.58

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Solution

The fourth proportional to 78,604.41, 108,473.95 and 42,794.58 is: 59,056.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,604.41 : 108,473.95 = 42,794.58 : x
  2. Step 2: Convert to fraction form
    78,604.41/108,473.95 = 42,794.58/x
  3. Step 3: Cross multiply
    78,604.41x = 108,473.95 × 42,794.58
  4. Step 4: Simplify right side
    78,604.41x = 4,642,097,131.19
  5. Step 5: Solve for x
    x = 4,642,097,131.19/78,604.41
  6. Step 6: Final answer
    x = 59,056.45

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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.