Home / 57,870.90-86,812.50-18,418.79

Finding the Fourth Proportional to 57,870.90, 86,812.50 and 18,418.79

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Solution

The fourth proportional to 57,870.90, 86,812.50 and 18,418.79 is: 27,630.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,870.90 : 86,812.50 = 18,418.79 : x
  2. Step 2: Convert to fraction form
    57,870.90/86,812.50 = 18,418.79/x
  3. Step 3: Cross multiply
    57,870.90x = 86,812.50 × 18,418.79
  4. Step 4: Simplify right side
    57,870.90x = 1,598,981,206.88
  5. Step 5: Solve for x
    x = 1,598,981,206.88/57,870.90
  6. Step 6: Final answer
    x = 27,630.14

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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.