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Finding the Fourth Proportional to 65,681.84, 98,537.16 and 21,313.08

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Solution

The fourth proportional to 65,681.84, 98,537.16 and 21,313.08 is: 31,974.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,681.84 : 98,537.16 = 21,313.08 : x
  2. Step 2: Convert to fraction form
    65,681.84/98,537.16 = 21,313.08/x
  3. Step 3: Cross multiply
    65,681.84x = 98,537.16 × 21,313.08
  4. Step 4: Simplify right side
    65,681.84x = 2,100,130,374.05
  5. Step 5: Solve for x
    x = 2,100,130,374.05/65,681.84
  6. Step 6: Final answer
    x = 31,974.29

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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.