Home / 86,388-129,584.02-23,208.20

Finding the Fourth Proportional to 86,388, 129,584.02 and 23,208.20

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Solution

The fourth proportional to 86,388, 129,584.02 and 23,208.20 is: 34,812.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,388 : 129,584.02 = 23,208.20 : x
  2. Step 2: Convert to fraction form
    86,388/129,584.02 = 23,208.20/x
  3. Step 3: Cross multiply
    86,388x = 129,584.02 × 23,208.20
  4. Step 4: Simplify right side
    86,388x = 3,007,411,852.96
  5. Step 5: Solve for x
    x = 3,007,411,852.96/86,388
  6. Step 6: Final answer
    x = 34,812.84

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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.