Home / 52,721.20-78,889.80-38,897.20

Finding the Fourth Proportional to 52,721.20, 78,889.80 and 38,897.20

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Solution

The fourth proportional to 52,721.20, 78,889.80 and 38,897.20 is: 58,204.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,721.20 : 78,889.80 = 38,897.20 : x
  2. Step 2: Convert to fraction form
    52,721.20/78,889.80 = 38,897.20/x
  3. Step 3: Cross multiply
    52,721.20x = 78,889.80 × 38,897.20
  4. Step 4: Simplify right side
    52,721.20x = 3,068,592,328.56
  5. Step 5: Solve for x
    x = 3,068,592,328.56/52,721.20
  6. Step 6: Final answer
    x = 58,204.14

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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.