Home / 86,435.95-129,667.77-36,516.51

Finding the Fourth Proportional to 86,435.95, 129,667.77 and 36,516.51

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Solution

The fourth proportional to 86,435.95, 129,667.77 and 36,516.51 is: 54,780.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,435.95 : 129,667.77 = 36,516.51 : x
  2. Step 2: Convert to fraction form
    86,435.95/129,667.77 = 36,516.51/x
  3. Step 3: Cross multiply
    86,435.95x = 129,667.77 × 36,516.51
  4. Step 4: Simplify right side
    86,435.95x = 4,735,014,419.88
  5. Step 5: Solve for x
    x = 4,735,014,419.88/86,435.95
  6. Step 6: Final answer
    x = 54,780.61

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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.