Home / 97,947.70-146,943.15-31,390.90

Finding the Fourth Proportional to 97,947.70, 146,943.15 and 31,390.90

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Solution

The fourth proportional to 97,947.70, 146,943.15 and 31,390.90 is: 47,093.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,947.70 : 146,943.15 = 31,390.90 : x
  2. Step 2: Convert to fraction form
    97,947.70/146,943.15 = 31,390.90/x
  3. Step 3: Cross multiply
    97,947.70x = 146,943.15 × 31,390.90
  4. Step 4: Simplify right side
    97,947.70x = 4,612,677,727.34
  5. Step 5: Solve for x
    x = 4,612,677,727.34/97,947.70
  6. Step 6: Final answer
    x = 47,093.27

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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.