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Finding the Fourth Proportional to 65,497.80, 98,265.84 and 21,123.57

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Solution

The fourth proportional to 65,497.80, 98,265.84 and 21,123.57 is: 31,691.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,497.80 : 98,265.84 = 21,123.57 : x
  2. Step 2: Convert to fraction form
    65,497.80/98,265.84 = 21,123.57/x
  3. Step 3: Cross multiply
    65,497.80x = 98,265.84 × 21,123.57
  4. Step 4: Simplify right side
    65,497.80x = 2,075,725,349.85
  5. Step 5: Solve for x
    x = 2,075,725,349.85/65,497.80
  6. Step 6: Final answer
    x = 31,691.53

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1.5x scale

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.