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Finding the Fourth Proportional to 65,772.96, 90,766.56 and 35,558.28

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Solution

The fourth proportional to 65,772.96, 90,766.56 and 35,558.28 is: 49,070.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,772.96 : 90,766.56 = 35,558.28 : x
  2. Step 2: Convert to fraction form
    65,772.96/90,766.56 = 35,558.28/x
  3. Step 3: Cross multiply
    65,772.96x = 90,766.56 × 35,558.28
  4. Step 4: Simplify right side
    65,772.96x = 3,227,502,755.12
  5. Step 5: Solve for x
    x = 3,227,502,755.12/65,772.96
  6. Step 6: Final answer
    x = 49,070.36

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1.5x scale

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.