Home / 65,621.12-98,432.08-21,247.68

Finding the Fourth Proportional to 65,621.12, 98,432.08 and 21,247.68

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Solution

The fourth proportional to 65,621.12, 98,432.08 and 21,247.68 is: 31,871.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,621.12 : 98,432.08 = 21,247.68 : x
  2. Step 2: Convert to fraction form
    65,621.12/98,432.08 = 21,247.68/x
  3. Step 3: Cross multiply
    65,621.12x = 98,432.08 × 21,247.68
  4. Step 4: Simplify right side
    65,621.12x = 2,091,453,337.57
  5. Step 5: Solve for x
    x = 2,091,453,337.57/65,621.12
  6. Step 6: Final answer
    x = 31,871.65

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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.