Home / 86,540.74-129,930.59-59,820.87

Finding the Fourth Proportional to 86,540.74, 129,930.59 and 59,820.87

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Solution

The fourth proportional to 86,540.74, 129,930.59 and 59,820.87 is: 89,813.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,540.74 : 129,930.59 = 59,820.87 : x
  2. Step 2: Convert to fraction form
    86,540.74/129,930.59 = 59,820.87/x
  3. Step 3: Cross multiply
    86,540.74x = 129,930.59 × 59,820.87
  4. Step 4: Simplify right side
    86,540.74x = 7,772,560,933.41
  5. Step 5: Solve for x
    x = 7,772,560,933.41/86,540.74
  6. Step 6: Final answer
    x = 89,813.89

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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.