Home / 86,206.07-129,199.52-38,770.45

Finding the Fourth Proportional to 86,206.07, 129,199.52 and 38,770.45

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Solution

The fourth proportional to 86,206.07, 129,199.52 and 38,770.45 is: 58,106.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,206.07 : 129,199.52 = 38,770.45 : x
  2. Step 2: Convert to fraction form
    86,206.07/129,199.52 = 38,770.45/x
  3. Step 3: Cross multiply
    86,206.07x = 129,199.52 × 38,770.45
  4. Step 4: Simplify right side
    86,206.07x = 5,009,123,304.11
  5. Step 5: Solve for x
    x = 5,009,123,304.11/86,206.07
  6. Step 6: Final answer
    x = 58,106.39

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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.