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Finding the Fourth Proportional to 65,868.80, 98,815.95 and 21,483.63

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Solution

The fourth proportional to 65,868.80, 98,815.95 and 21,483.63 is: 32,229.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,868.80 : 98,815.95 = 21,483.63 : x
  2. Step 2: Convert to fraction form
    65,868.80/98,815.95 = 21,483.63/x
  3. Step 3: Cross multiply
    65,868.80x = 98,815.95 × 21,483.63
  4. Step 4: Simplify right side
    65,868.80x = 2,122,925,307.90
  5. Step 5: Solve for x
    x = 2,122,925,307.90/65,868.80
  6. Step 6: Final answer
    x = 32,229.61

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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.