Home / 78,972.57-108,947.46-47,123.02

Finding the Fourth Proportional to 78,972.57, 108,947.46 and 47,123.02

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Solution

The fourth proportional to 78,972.57, 108,947.46 and 47,123.02 is: 65,009.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,972.57 : 108,947.46 = 47,123.02 : x
  2. Step 2: Convert to fraction form
    78,972.57/108,947.46 = 47,123.02/x
  3. Step 3: Cross multiply
    78,972.57x = 108,947.46 × 47,123.02
  4. Step 4: Simplify right side
    78,972.57x = 5,133,932,638.99
  5. Step 5: Solve for x
    x = 5,133,932,638.99/78,972.57
  6. Step 6: Final answer
    x = 65,009.06

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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.