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Finding the Fourth Proportional to 65,347.63, 90,165.81 and 38,480.33

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Solution

The fourth proportional to 65,347.63, 90,165.81 and 38,480.33 is: 53,094.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,347.63 : 90,165.81 = 38,480.33 : x
  2. Step 2: Convert to fraction form
    65,347.63/90,165.81 = 38,480.33/x
  3. Step 3: Cross multiply
    65,347.63x = 90,165.81 × 38,480.33
  4. Step 4: Simplify right side
    65,347.63x = 3,469,610,123.52
  5. Step 5: Solve for x
    x = 3,469,610,123.52/65,347.63
  6. Step 6: Final answer
    x = 53,094.66

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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.