Home / 45,292.38-67,916.72-18,990.06

Finding the Fourth Proportional to 45,292.38, 67,916.72 and 18,990.06

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Solution

The fourth proportional to 45,292.38, 67,916.72 and 18,990.06 is: 28,475.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,292.38 : 67,916.72 = 18,990.06 : x
  2. Step 2: Convert to fraction form
    45,292.38/67,916.72 = 18,990.06/x
  3. Step 3: Cross multiply
    45,292.38x = 67,916.72 × 18,990.06
  4. Step 4: Simplify right side
    45,292.38x = 1,289,742,587.80
  5. Step 5: Solve for x
    x = 1,289,742,587.80/45,292.38
  6. Step 6: Final answer
    x = 28,475.93

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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.