Home / 83,974.51-125,958.12-31,384.45

Finding the Fourth Proportional to 83,974.51, 125,958.12 and 31,384.45

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Solution

The fourth proportional to 83,974.51, 125,958.12 and 31,384.45 is: 47,075.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,974.51 : 125,958.12 = 31,384.45 : x
  2. Step 2: Convert to fraction form
    83,974.51/125,958.12 = 31,384.45/x
  3. Step 3: Cross multiply
    83,974.51x = 125,958.12 × 31,384.45
  4. Step 4: Simplify right side
    83,974.51x = 3,953,126,319.23
  5. Step 5: Solve for x
    x = 3,953,126,319.23/83,974.51
  6. Step 6: Final answer
    x = 47,075.31

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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.