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Finding the Fourth Proportional to 65,463.30, 90,339.39 and 35,655.30

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Solution

The fourth proportional to 65,463.30, 90,339.39 and 35,655.30 is: 49,204.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,463.30 : 90,339.39 = 35,655.30 : x
  2. Step 2: Convert to fraction form
    65,463.30/90,339.39 = 35,655.30/x
  3. Step 3: Cross multiply
    65,463.30x = 90,339.39 × 35,655.30
  4. Step 4: Simplify right side
    65,463.30x = 3,221,078,052.27
  5. Step 5: Solve for x
    x = 3,221,078,052.27/65,463.30
  6. Step 6: Final answer
    x = 49,204.33

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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.