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Finding the Fourth Proportional to 65,496.80, 98,264.34 and 21,122.57

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Solution

The fourth proportional to 65,496.80, 98,264.34 and 21,122.57 is: 31,690.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,496.80 : 98,264.34 = 21,122.57 : x
  2. Step 2: Convert to fraction form
    65,496.80/98,264.34 = 21,122.57/x
  3. Step 3: Cross multiply
    65,496.80x = 98,264.34 × 21,122.57
  4. Step 4: Simplify right side
    65,496.80x = 2,075,595,645.81
  5. Step 5: Solve for x
    x = 2,075,595,645.81/65,496.80
  6. Step 6: Final answer
    x = 31,690.03

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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.