Home / 78,971.10-108,945.07-47,121.49

Finding the Fourth Proportional to 78,971.10, 108,945.07 and 47,121.49

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Solution

The fourth proportional to 78,971.10, 108,945.07 and 47,121.49 is: 65,006.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,971.10 : 108,945.07 = 47,121.49 : x
  2. Step 2: Convert to fraction form
    78,971.10/108,945.07 = 47,121.49/x
  3. Step 3: Cross multiply
    78,971.10x = 108,945.07 × 47,121.49
  4. Step 4: Simplify right side
    78,971.10x = 5,133,654,026.55
  5. Step 5: Solve for x
    x = 5,133,654,026.55/78,971.10
  6. Step 6: Final answer
    x = 65,006.74

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1.5x scale

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.