Home / 52,541.20-78,743.40-21,340

Finding the Fourth Proportional to 52,541.20, 78,743.40 and 21,340

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Solution

The fourth proportional to 52,541.20, 78,743.40 and 21,340 is: 31,982.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,541.20 : 78,743.40 = 21,340 : x
  2. Step 2: Convert to fraction form
    52,541.20/78,743.40 = 21,340/x
  3. Step 3: Cross multiply
    52,541.20x = 78,743.40 × 21,340
  4. Step 4: Simplify right side
    52,541.20x = 1,680,384,156.00
  5. Step 5: Solve for x
    x = 1,680,384,156.00/52,541.20
  6. Step 6: Final answer
    x = 31,982.22

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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.