Home / 86,088.48-129,137.60-30,684.48

Finding the Fourth Proportional to 86,088.48, 129,137.60 and 30,684.48

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Solution

The fourth proportional to 86,088.48, 129,137.60 and 30,684.48 is: 46,028.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,088.48 : 129,137.60 = 30,684.48 : x
  2. Step 2: Convert to fraction form
    86,088.48/129,137.60 = 30,684.48/x
  3. Step 3: Cross multiply
    86,088.48x = 129,137.60 × 30,684.48
  4. Step 4: Simplify right side
    86,088.48x = 3,962,520,104.45
  5. Step 5: Solve for x
    x = 3,962,520,104.45/86,088.48
  6. Step 6: Final answer
    x = 46,028.46

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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.