Home / 65,681.81-98,536.58-21,305.12

Finding the Fourth Proportional to 65,681.81, 98,536.58 and 21,305.12

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Solution

The fourth proportional to 65,681.81, 98,536.58 and 21,305.12 is: 31,962.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,681.81 : 98,536.58 = 21,305.12 : x
  2. Step 2: Convert to fraction form
    65,681.81/98,536.58 = 21,305.12/x
  3. Step 3: Cross multiply
    65,681.81x = 98,536.58 × 21,305.12
  4. Step 4: Simplify right side
    65,681.81x = 2,099,333,661.29
  5. Step 5: Solve for x
    x = 2,099,333,661.29/65,681.81
  6. Step 6: Final answer
    x = 31,962.18

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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.