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Finding the Fourth Proportional to 65,247.57, 97,862.22 and 20,878.20

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Solution

The fourth proportional to 65,247.57, 97,862.22 and 20,878.20 is: 31,314.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,247.57 : 97,862.22 = 20,878.20 : x
  2. Step 2: Convert to fraction form
    65,247.57/97,862.22 = 20,878.20/x
  3. Step 3: Cross multiply
    65,247.57x = 97,862.22 × 20,878.20
  4. Step 4: Simplify right side
    65,247.57x = 2,043,187,001.60
  5. Step 5: Solve for x
    x = 2,043,187,001.60/65,247.57
  6. Step 6: Final answer
    x = 31,314.38

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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.