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Finding the Fourth Proportional to 65,512.80, 90,363.60 and 44,258.40

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Solution

The fourth proportional to 65,512.80, 90,363.60 and 44,258.40 is: 61,046.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,512.80 : 90,363.60 = 44,258.40 : x
  2. Step 2: Convert to fraction form
    65,512.80/90,363.60 = 44,258.40/x
  3. Step 3: Cross multiply
    65,512.80x = 90,363.60 × 44,258.40
  4. Step 4: Simplify right side
    65,512.80x = 3,999,348,354.24
  5. Step 5: Solve for x
    x = 3,999,348,354.24/65,512.80
  6. Step 6: Final answer
    x = 61,046.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.