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Finding the Fourth Proportional to 65,898.84, 98,847.90 and 15,978.90

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Solution

The fourth proportional to 65,898.84, 98,847.90 and 15,978.90 is: 23,968.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,898.84 : 98,847.90 = 15,978.90 : x
  2. Step 2: Convert to fraction form
    65,898.84/98,847.90 = 15,978.90/x
  3. Step 3: Cross multiply
    65,898.84x = 98,847.90 × 15,978.90
  4. Step 4: Simplify right side
    65,898.84x = 1,579,480,709.31
  5. Step 5: Solve for x
    x = 1,579,480,709.31/65,898.84
  6. Step 6: Final answer
    x = 23,968.26

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Similar ratio
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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.