Home / 45,739.68-68,599.92-12,900

Finding the Fourth Proportional to 45,739.68, 68,599.92 and 12,900

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Solution

The fourth proportional to 45,739.68, 68,599.92 and 12,900 is: 19,347.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,739.68 : 68,599.92 = 12,900 : x
  2. Step 2: Convert to fraction form
    45,739.68/68,599.92 = 12,900/x
  3. Step 3: Cross multiply
    45,739.68x = 68,599.92 × 12,900
  4. Step 4: Simplify right side
    45,739.68x = 884,938,968
  5. Step 5: Solve for x
    x = 884,938,968/45,739.68
  6. Step 6: Final answer
    x = 19,347.29

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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.