Home / 65,685.11-98,542.04-21,316.32

Finding the Fourth Proportional to 65,685.11, 98,542.04 and 21,316.32

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Solution

The fourth proportional to 65,685.11, 98,542.04 and 21,316.32 is: 31,979.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,685.11 : 98,542.04 = 21,316.32 : x
  2. Step 2: Convert to fraction form
    65,685.11/98,542.04 = 21,316.32/x
  3. Step 3: Cross multiply
    65,685.11x = 98,542.04 × 21,316.32
  4. Step 4: Simplify right side
    65,685.11x = 2,100,553,551.51
  5. Step 5: Solve for x
    x = 2,100,553,551.51/65,685.11
  6. Step 6: Final answer
    x = 31,979.15

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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.