Home / 65,685.15-98,532.59-21,319.02

Finding the Fourth Proportional to 65,685.15, 98,532.59 and 21,319.02

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Solution

The fourth proportional to 65,685.15, 98,532.59 and 21,319.02 is: 31,980.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,685.15 : 98,532.59 = 21,319.02 : x
  2. Step 2: Convert to fraction form
    65,685.15/98,532.59 = 21,319.02/x
  3. Step 3: Cross multiply
    65,685.15x = 98,532.59 × 21,319.02
  4. Step 4: Simplify right side
    65,685.15x = 2,100,618,150.27
  5. Step 5: Solve for x
    x = 2,100,618,150.27/65,685.15
  6. Step 6: Final answer
    x = 31,980.11

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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.