Home / 70,812.20-97,721.44-38,981.28

Finding the Fourth Proportional to 70,812.20, 97,721.44 and 38,981.28

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Solution

The fourth proportional to 70,812.20, 97,721.44 and 38,981.28 is: 53,794.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,812.20 : 97,721.44 = 38,981.28 : x
  2. Step 2: Convert to fraction form
    70,812.20/97,721.44 = 38,981.28/x
  3. Step 3: Cross multiply
    70,812.20x = 97,721.44 × 38,981.28
  4. Step 4: Simplify right side
    70,812.20x = 3,809,306,814.64
  5. Step 5: Solve for x
    x = 3,809,306,814.64/70,812.20
  6. Step 6: Final answer
    x = 53,794.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.