Home / 85,442.63-117,910.35-47,204.78

Finding the Fourth Proportional to 85,442.63, 117,910.35 and 47,204.78

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Solution

The fourth proportional to 85,442.63, 117,910.35 and 47,204.78 is: 65,142.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,442.63 : 117,910.35 = 47,204.78 : x
  2. Step 2: Convert to fraction form
    85,442.63/117,910.35 = 47,204.78/x
  3. Step 3: Cross multiply
    85,442.63x = 117,910.35 × 47,204.78
  4. Step 4: Simplify right side
    85,442.63x = 5,565,931,541.92
  5. Step 5: Solve for x
    x = 5,565,931,541.92/85,442.63
  6. Step 6: Final answer
    x = 65,142.33

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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.