Home / 86,539.14-129,719.61-62,787.51

Finding the Fourth Proportional to 86,539.14, 129,719.61 and 62,787.51

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Solution

The fourth proportional to 86,539.14, 129,719.61 and 62,787.51 is: 94,116.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,539.14 : 129,719.61 = 62,787.51 : x
  2. Step 2: Convert to fraction form
    86,539.14/129,719.61 = 62,787.51/x
  3. Step 3: Cross multiply
    86,539.14x = 129,719.61 × 62,787.51
  4. Step 4: Simplify right side
    86,539.14x = 8,144,771,310.07
  5. Step 5: Solve for x
    x = 8,144,771,310.07/86,539.14
  6. Step 6: Final answer
    x = 94,116.62

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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.