Home / 86,569.65-129,838.07-30,396.56

Finding the Fourth Proportional to 86,569.65, 129,838.07 and 30,396.56

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Solution

The fourth proportional to 86,569.65, 129,838.07 and 30,396.56 is: 45,589.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,569.65 : 129,838.07 = 30,396.56 : x
  2. Step 2: Convert to fraction form
    86,569.65/129,838.07 = 30,396.56/x
  3. Step 3: Cross multiply
    86,569.65x = 129,838.07 × 30,396.56
  4. Step 4: Simplify right side
    86,569.65x = 3,946,630,111.84
  5. Step 5: Solve for x
    x = 3,946,630,111.84/86,569.65
  6. Step 6: Final answer
    x = 45,589.07

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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.