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Finding the Fourth Proportional to 94,420, 130,299.60 and 51,978.34

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Solution

The fourth proportional to 94,420, 130,299.60 and 51,978.34 is: 71,730.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,420 : 130,299.60 = 51,978.34 : x
  2. Step 2: Convert to fraction form
    94,420/130,299.60 = 51,978.34/x
  3. Step 3: Cross multiply
    94,420x = 130,299.60 × 51,978.34
  4. Step 4: Simplify right side
    94,420x = 6,772,756,910.66
  5. Step 5: Solve for x
    x = 6,772,756,910.66/94,420
  6. Step 6: Final answer
    x = 71,730.11

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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.