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Finding the Fourth Proportional to 65,803.77, 90,767.39 and 43,144.25

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Solution

The fourth proportional to 65,803.77, 90,767.39 and 43,144.25 is: 59,511.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,803.77 : 90,767.39 = 43,144.25 : x
  2. Step 2: Convert to fraction form
    65,803.77/90,767.39 = 43,144.25/x
  3. Step 3: Cross multiply
    65,803.77x = 90,767.39 × 43,144.25
  4. Step 4: Simplify right side
    65,803.77x = 3,916,090,296.45
  5. Step 5: Solve for x
    x = 3,916,090,296.45/65,803.77
  6. Step 6: Final answer
    x = 59,511.64

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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.