Home / 86,477.05-129,708.67-38,460.54

Finding the Fourth Proportional to 86,477.05, 129,708.67 and 38,460.54

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Solution

The fourth proportional to 86,477.05, 129,708.67 and 38,460.54 is: 57,687.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,477.05 : 129,708.67 = 38,460.54 : x
  2. Step 2: Convert to fraction form
    86,477.05/129,708.67 = 38,460.54/x
  3. Step 3: Cross multiply
    86,477.05x = 129,708.67 × 38,460.54
  4. Step 4: Simplify right side
    86,477.05x = 4,988,665,490.88
  5. Step 5: Solve for x
    x = 4,988,665,490.88/86,477.05
  6. Step 6: Final answer
    x = 57,687.74

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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.