Home / 31,362.35-47,043.80-7,988.77

Finding the Fourth Proportional to 31,362.35, 47,043.80 and 7,988.77

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Solution

The fourth proportional to 31,362.35, 47,043.80 and 7,988.77 is: 11,983.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,362.35 : 47,043.80 = 7,988.77 : x
  2. Step 2: Convert to fraction form
    31,362.35/47,043.80 = 7,988.77/x
  3. Step 3: Cross multiply
    31,362.35x = 47,043.80 × 7,988.77
  4. Step 4: Simplify right side
    31,362.35x = 375,821,822.96
  5. Step 5: Solve for x
    x = 375,821,822.96/31,362.35
  6. Step 6: Final answer
    x = 11,983.22

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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.