Home / 65,981.14-98,968.47-21,628.78

Finding the Fourth Proportional to 65,981.14, 98,968.47 and 21,628.78

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Solution

The fourth proportional to 65,981.14, 98,968.47 and 21,628.78 is: 32,442.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,981.14 : 98,968.47 = 21,628.78 : x
  2. Step 2: Convert to fraction form
    65,981.14/98,968.47 = 21,628.78/x
  3. Step 3: Cross multiply
    65,981.14x = 98,968.47 × 21,628.78
  4. Step 4: Simplify right side
    65,981.14x = 2,140,567,264.57
  5. Step 5: Solve for x
    x = 2,140,567,264.57/65,981.14
  6. Step 6: Final answer
    x = 32,442.11

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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.