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Finding the Fourth Proportional to 65,476.95, 98,209.02 and 21,135.52

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Solution

The fourth proportional to 65,476.95, 98,209.02 and 21,135.52 is: 31,701.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,476.95 : 98,209.02 = 21,135.52 : x
  2. Step 2: Convert to fraction form
    65,476.95/98,209.02 = 21,135.52/x
  3. Step 3: Cross multiply
    65,476.95x = 98,209.02 × 21,135.52
  4. Step 4: Simplify right side
    65,476.95x = 2,075,698,706.39
  5. Step 5: Solve for x
    x = 2,075,698,706.39/65,476.95
  6. Step 6: Final answer
    x = 31,701.21

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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.