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Finding the Fourth Proportional to 65,530.17, 90,431.64 and 35,722.17

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Solution

The fourth proportional to 65,530.17, 90,431.64 and 35,722.17 is: 49,296.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,530.17 : 90,431.64 = 35,722.17 : x
  2. Step 2: Convert to fraction form
    65,530.17/90,431.64 = 35,722.17/x
  3. Step 3: Cross multiply
    65,530.17x = 90,431.64 × 35,722.17
  4. Step 4: Simplify right side
    65,530.17x = 3,230,414,417.46
  5. Step 5: Solve for x
    x = 3,230,414,417.46/65,530.17
  6. Step 6: Final answer
    x = 49,296.60

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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.