Home / 78,901.18-118,310.97-28,968.46

Finding the Fourth Proportional to 78,901.18, 118,310.97 and 28,968.46

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Solution

The fourth proportional to 78,901.18, 118,310.97 and 28,968.46 is: 43,437.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,901.18 : 118,310.97 = 28,968.46 : x
  2. Step 2: Convert to fraction form
    78,901.18/118,310.97 = 28,968.46/x
  3. Step 3: Cross multiply
    78,901.18x = 118,310.97 × 28,968.46
  4. Step 4: Simplify right side
    78,901.18x = 3,427,286,602.01
  5. Step 5: Solve for x
    x = 3,427,286,602.01/78,901.18
  6. Step 6: Final answer
    x = 43,437.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.