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Finding the Fourth Proportional to 65,392.68, 90,239.16 and 37,103.64

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Solution

The fourth proportional to 65,392.68, 90,239.16 and 37,103.64 is: 51,201.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,392.68 : 90,239.16 = 37,103.64 : x
  2. Step 2: Convert to fraction form
    65,392.68/90,239.16 = 37,103.64/x
  3. Step 3: Cross multiply
    65,392.68x = 90,239.16 × 37,103.64
  4. Step 4: Simplify right side
    65,392.68x = 3,348,201,306.54
  5. Step 5: Solve for x
    x = 3,348,201,306.54/65,392.68
  6. Step 6: Final answer
    x = 51,201.47

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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.