Home / 83,756.49-125,663.89-39,417.09

Finding the Fourth Proportional to 83,756.49, 125,663.89 and 39,417.09

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Solution

The fourth proportional to 83,756.49, 125,663.89 and 39,417.09 is: 59,139.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,756.49 : 125,663.89 = 39,417.09 : x
  2. Step 2: Convert to fraction form
    83,756.49/125,663.89 = 39,417.09/x
  3. Step 3: Cross multiply
    83,756.49x = 125,663.89 × 39,417.09
  4. Step 4: Simplify right side
    83,756.49x = 4,953,304,861.88
  5. Step 5: Solve for x
    x = 4,953,304,861.88/83,756.49
  6. Step 6: Final answer
    x = 59,139.36

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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.