Home / 78,325.45-108,091.08-42,515.42

Finding the Fourth Proportional to 78,325.45, 108,091.08 and 42,515.42

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Solution

The fourth proportional to 78,325.45, 108,091.08 and 42,515.42 is: 58,672.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,325.45 : 108,091.08 = 42,515.42 : x
  2. Step 2: Convert to fraction form
    78,325.45/108,091.08 = 42,515.42/x
  3. Step 3: Cross multiply
    78,325.45x = 108,091.08 × 42,515.42
  4. Step 4: Simplify right side
    78,325.45x = 4,595,537,124.00
  5. Step 5: Solve for x
    x = 4,595,537,124.00/78,325.45
  6. Step 6: Final answer
    x = 58,672.34

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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.